Calcareous tubes hi-res stock photography and images

Calcareous tubes made by tube worms on a pebble found on the shoreline intertidal zone at low tide in Portland Harbour, Dorset England UK GB. There ar Stock Photo

RMRJXEKB–Calcareous tubes made by tube worms on a pebble found on the shoreline intertidal zone at low tide in Portland Harbour, Dorset England UK GB. There ar

Mussel shell with natural calcareous tubes made by marine worms, like Pomatoceros species. Found on beach. Stock Photo

RFRR6HD1–Mussel shell with natural calcareous tubes made by marine worms, like Pomatoceros species. Found on beach.

Delicate calcareous tubes of polychaete worms, small fossils from the Baltic Sea. Ideal for collectors and captivating backgrounds. Stock Photo

RF2X5F43K–Delicate calcareous tubes of polychaete worms, small fossils from the Baltic Sea. Ideal for collectors and captivating backgrounds.

Tubulipora verrucosa ancient invertebrate jawless fish dominant in the Mesozoic with long curved calcareous tubes with terminal apertures which are either circular or polygonal in shape,living in colonies on the continental shelf Stock Photo

RF2AKXCG8–Tubulipora verrucosa ancient invertebrate jawless fish dominant in the Mesozoic with long curved calcareous tubes with terminal apertures which are either circular or polygonal in shape,living in colonies on the continental shelf

Serpula contortiplicata which form irregularly twisted calcareous tubes often grow together in large masses, vintage line drawing or engraving illustr Stock Vector

RFT5RGH8–Serpula contortiplicata which form irregularly twisted calcareous tubes often grow together in large masses, vintage line drawing or engraving illustr

Spiral tubeworm (Spirorbis spirorbis) calcareous tubes attached to stems of Toothed wrack (Fucus serratus) exposed at low tide, Crail, Scotland, UK, July. Stock Photo

RMW7MX9N–Spiral tubeworm (Spirorbis spirorbis) calcareous tubes attached to stems of Toothed wrack (Fucus serratus) exposed at low tide, Crail, Scotland, UK, July.

Worm casts on Variegated Scallop shell Stock Photo

RF2TAD4K1–Worm casts on Variegated Scallop shell

Tubes of marine worms, on bivalve shell. Spain. Europe Stock Photo

RMP6TRXW–Tubes of marine worms, on bivalve shell. Spain. Europe

Scallop shell with calcareous tubes of keelworms Stock Photo

RF2XAPHH6–Scallop shell with calcareous tubes of keelworms

RFPAC4TH–worm casings of Keel worms

Calcareous tubes to protect the marine tube worms, detail on a rock. Stock Photo

RF2H5CYND–Calcareous tubes to protect the marine tube worms, detail on a rock.

Calcareous tube worm remains from an ancient pot found in the ocean Stock Photo

RFW3991E–Calcareous tube worm remains from an ancient pot found in the ocean

The fossils were found on the beach of Lubmin on the Greifswalder Bodden Stock Photo

RF2RNCE8M–The fossils were found on the beach of Lubmin on the Greifswalder Bodden

Marine invertebrates: red sea cucumber holothurian Psolus fabricii and calcareous tubes of sepulidae polychaete worms. N Pacific Stock Photo

RMA8YDH4–Marine invertebrates: red sea cucumber holothurian Psolus fabricii and calcareous tubes of sepulidae polychaete worms. N Pacific

Calcareous Tubeworm (Serpula vermicularis) calcareous tube on rock with Sessile Barnacles (Verruca stroemia) exposed at low Stock Photo

RMDA46N9–Calcareous Tubeworm (Serpula vermicularis) calcareous tube on rock with Sessile Barnacles (Verruca stroemia) exposed at low

Shipworm Teredo navalis burrows Stock Photo

RMC43BJ9–Shipworm Teredo navalis burrows

shell of European oyster and common dog whelk showing evidence of German writing Keeled tube worm and hole boring coral Stock Photo

RMENG871–shell of European oyster and common dog whelk showing evidence of German writing Keeled tube worm and hole boring coral

RF2WG3Y8D–Worm casts on sea shell

Yellow network sponges in the Mediterranean Sea Stock Photo

RFBG6JC2–Yellow network sponges in the Mediterranean Sea

Calcareous tubes made by tube worms on a dead razor clam shell found on the shoreline intertidal zone in Portland Harbour, Dorset England UK GB. There Stock Photo

RMRJXEM0–Calcareous tubes made by tube worms on a dead razor clam shell found on the shoreline intertidal zone in Portland Harbour, Dorset England UK GB. There

RMBD7YFP–serpula contortuplicata

Fucus distichus covered with spiral shells of a Spirorbis worm, Seal Harbor, Maine. Stock Photo

RMM4J000–Fucus distichus covered with spiral shells of a Spirorbis worm, Seal Harbor, Maine.

Lacey Ball Sponge, Leucosolenia eleanor, in a Point of Arches tidepool in Olympic National Park, Washington State, USA Stock Photo

RM2NHG7WD–Lacey Ball Sponge, Leucosolenia eleanor, in a Point of Arches tidepool in Olympic National Park, Washington State, USA

White Calcium Carbonate tubes on rocks at low tide level are the casts made by a Polychaete Bristle Worm. The adult never leaves this protection Stock Photo

RM2H0JN29–White Calcium Carbonate tubes on rocks at low tide level are the casts made by a Polychaete Bristle Worm. The adult never leaves this protection

RMW7MX9M–Spiral tubeworm (Spirorbis spirorbis) calcareous tubes attached to stems of Toothed wrack (Fucus serratus) exposed at low tide, Crail, Scotland, UK, July.

Archive image from page 402 of Cuvier's animal kingdom arranged. Cuvier's animal kingdom : arranged according to its organization cuviersanimalkin00cuvi Year: 1840 THE FIRST ORDER OF ANNELIDES. THE TUBICOLE. Some species of this division form a homogeneous, calcareous tube, which probably results from their transudation, like the shells of the MoUusks, but to which the muscles do not adhere ; others construct tubes, by agglutinating grains of sand, fragments of shells, and particles of mud, which they join by means of a membrane, which likewise is doubtless transuded ; lastly, there are som Stock Photo

RMW28AK1–Archive image from page 402 of Cuvier's animal kingdom arranged. Cuvier's animal kingdom : arranged according to its organization cuviersanimalkin00cuvi Year: 1840 THE FIRST ORDER OF ANNELIDES. THE TUBICOLE. Some species of this division form a homogeneous, calcareous tube, which probably results from their transudation, like the shells of the MoUusks, but to which the muscles do not adhere ; others construct tubes, by agglutinating grains of sand, fragments of shells, and particles of mud, which they join by means of a membrane, which likewise is doubtless transuded ; lastly, there are som

. Handbook of zoology with examples from Canadian species, recent and fossil [microform]. Zoology; Invertebrates; Zoologie; Invertébrés. PROVINCE CCKLKNTERATA. 83 the animals arc connected by numerous canals traversing its substance. The families of Alcyonaria arc ihe following: 1. Alcvonida:.—Tilt' Alcyonia, which have a sclerodermic CO rail urn, spiculous or fibrous, and when dry rfSfml)!*) Bpongt's. 2. TuHii'ORiD/E.—The Tube-corals. The corallum is com- posed of a number of distinct calcareous tubes connected by horizon- tal plates. 3. Pennatui.id.e,—The Sea-pens. In these the sclerobasic c Stock Photo

RMRJ2B94–. Handbook of zoology with examples from Canadian species, recent and fossil [microform]. Zoology; Invertebrates; Zoologie; Invertébrés. PROVINCE CCKLKNTERATA. 83 the animals arc connected by numerous canals traversing its substance. The families of Alcyonaria arc ihe following: 1. Alcvonida:.—Tilt' Alcyonia, which have a sclerodermic CO rail urn, spiculous or fibrous, and when dry rfSfml)!*) Bpongt's. 2. TuHii'ORiD/E.—The Tube-corals. The corallum is com- posed of a number of distinct calcareous tubes connected by horizon- tal plates. 3. Pennatui.id.e,—The Sea-pens. In these the sclerobasic c

Common Whelk (Buccinum undatum) shell with Razor shells at the strandline Stock Photo

RMHR9J94–Common Whelk (Buccinum undatum) shell with Razor shells at the strandline

RFPAC4W6–worm casings of Keel worms

. A CORNICK IN A .MARINE A(,)UARIU.M. rAINTED );V I'llll.ll HKNKV (;nssK, F. K.s. The scene shews the great white Sea Anemone of Weymouth. In fnint are two richly coloured sea-worms (Serpula) issuing from their calcareous tubes, attached to a dead scallop's shell. The green sea-grass fZostera) and a translucent pink sea-weed, left and ri'jht, complete the picture Stock Photo

RMMCKN72–. A CORNICK IN A .MARINE A(,)UARIU.M. rAINTED );V I'llll.ll HKNKV (;nssK, F. K.s. The scene shews the great white Sea Anemone of Weymouth. In fnint are two richly coloured sea-worms (Serpula) issuing from their calcareous tubes, attached to a dead scallop's shell. The green sea-grass fZostera) and a translucent pink sea-weed, left and ri'jht, complete the picture

. Dawn of life: being the history of the oldest known fossil remains, and their relation to geological time and to the development of the animal kingdom. Paleontology; Eozoon; Life. 106 THE DAWN OF LIFE. tlie mass, as fibres of oxide of iron or manganese liave grown in tlie silica of moss-agate ; but tliis theory would be encompassed with nearly as great mechanical and chemical difficulties. The only rational view that any one can take of the process is, that the calcareous matter was the original substance, and that it had delicate tubes traversing it which became injected with serpentine. Th Stock Photo

RMPFG41G–. Dawn of life: being the history of the oldest known fossil remains, and their relation to geological time and to the development of the animal kingdom. Paleontology; Eozoon; Life. 106 THE DAWN OF LIFE. tlie mass, as fibres of oxide of iron or manganese liave grown in tlie silica of moss-agate ; but tliis theory would be encompassed with nearly as great mechanical and chemical difficulties. The only rational view that any one can take of the process is, that the calcareous matter was the original substance, and that it had delicate tubes traversing it which became injected with serpentine. Th

Marine benthic invertebrates: brown Bryozoa colony, calcareous tubes of polychaetae worms and sea anemone Metridium in N Pacific Stock Photo

RMA8YDGA–Marine benthic invertebrates: brown Bryozoa colony, calcareous tubes of polychaetae worms and sea anemone Metridium in N Pacific

RMRJXENY–Calcareous tubes made by tube worms on a dead razor clam shell found on the shoreline intertidal zone in Portland Harbour, Dorset England UK GB. There

RM2H0JMXJ–White Calcium Carbonate tubes on rocks at low tide level are the casts made by a Polychaete Bristle Worm. The adult never leaves this protection

RMW7MX9R–Spiral tubeworm (Spirorbis spirorbis) calcareous tubes attached to stems of Toothed wrack (Fucus serratus) exposed at low tide, Crail, Scotland, UK, July

Elementary text-book of zoology, general part and special part: protozoa to insecta . elementarytextbo00clau Year: 1892 217 Amongst the calcareous Sponges, the simple Sponge with inhalent pores and terminal osculum {Olyntlms-iovm) is represented by the stock-forming Leucosolenia (Grantia), which is composed of numerous hollow cylinders. The structure of this sponge has been described by Lieberkiihn. In the Syconidai the body cavity has a more complicated form. The central space opens into secondary pei-ipheral spaces or radial tubes, which are lined by ciliated cells, and open externally thro Stock Photo

RMT02J6C–Elementary text-book of zoology, general part and special part: protozoa to insecta . elementarytextbo00clau Year: 1892 217 Amongst the calcareous Sponges, the simple Sponge with inhalent pores and terminal osculum {Olyntlms-iovm) is represented by the stock-forming Leucosolenia (Grantia), which is composed of numerous hollow cylinders. The structure of this sponge has been described by Lieberkiihn. In the Syconidai the body cavity has a more complicated form. The central space opens into secondary pei-ipheral spaces or radial tubes, which are lined by ciliated cells, and open externally thro

. Corals and coral islands. Coral reefs and islands; Corals. CORALS AND CORAL MAKERS. 6i In one family of this tribe the polyps form red calcareous tubes; sometimes a slender, creeping tube, with polyps at intervals, as in a species referred by the author to the genus Aulopora ; but generally vertical tubes, grouped into large red masses, called, popularly, Orga?i- pipe coraL A portion of one of the latter—Tiibi- pora syringa D.—is re- presented in the first of the annexed figures, with its expanded polyps; and a polyp from the group much enlarged in the sfcond figure. The papillse of the frin Stock Photo

RMRE7TMX–. Corals and coral islands. Coral reefs and islands; Corals. CORALS AND CORAL MAKERS. 6i In one family of this tribe the polyps form red calcareous tubes; sometimes a slender, creeping tube, with polyps at intervals, as in a species referred by the author to the genus Aulopora ; but generally vertical tubes, grouped into large red masses, called, popularly, Orga?i- pipe coraL A portion of one of the latter—Tiibi- pora syringa D.—is re- presented in the first of the annexed figures, with its expanded polyps; and a polyp from the group much enlarged in the sfcond figure. The papillse of the frin

RFPAC4WM–worm casings of Keel worms

. Die Alcyoniden der Siboga-expedition. I. Coralliidae . Â§ 9. Die wichtigsten Beschreibungen und Diagnosen des Genus Cladochonus M'Coy. des Genus Cladoc/iotuis hat M'Coy dasselbe wie folgt beschrieben^): âGen. Char.: Polypidom of very thick, straight, slender, calcareous tubes, suddenly dilating at short regulÃ¤r distances into large, oblique, cup-shaped terminal Chambers, longitudinally striated within; from the point where the dilatation commences, a second slender tube similar to the first is given off at an angle, varying with the species, and terminating at the same distance as the- form Stock Photo

RMMEJY59–. Die Alcyoniden der Siboga-expedition. I. Coralliidae . Â§ 9. Die wichtigsten Beschreibungen und Diagnosen des Genus Cladochonus M'Coy. des Genus Cladoc/iotuis hat M'Coy dasselbe wie folgt beschrieben^): âGen. Char.: Polypidom of very thick, straight, slender, calcareous tubes, suddenly dilating at short regulÃ¤r distances into large, oblique, cup-shaped terminal Chambers, longitudinally striated within; from the point where the dilatation commences, a second slender tube similar to the first is given off at an angle, varying with the species, and terminating at the same distance as the- form

. Fossil plants : for students of botany and geology . Paleobotany. 124 THALLOPHYTA. [CH. tubular structure in calcareous nodules obtained from a rock of Ordovician age in the Girvan district of Scotland. These Authors considered the tubes to be those of some Khizopod, and proposed to designate the fossil Girvanella. Ginanella (fig. 26). Messrs Nicholson and Etheridge defined the genus as follows:— "Microscopic tubuli, with arenaceous or calcareous (?) walls, flexuous or contorted, circular in section, forming loosely compacted masses. The tubes, apparently simple cylinders, without perfo Stock Photo

RMPG1727–. Fossil plants : for students of botany and geology . Paleobotany. 124 THALLOPHYTA. [CH. tubular structure in calcareous nodules obtained from a rock of Ordovician age in the Girvan district of Scotland. These Authors considered the tubes to be those of some Khizopod, and proposed to designate the fossil Girvanella. Ginanella (fig. 26). Messrs Nicholson and Etheridge defined the genus as follows:— "Microscopic tubuli, with arenaceous or calcareous (?) walls, flexuous or contorted, circular in section, forming loosely compacted masses. The tubes, apparently simple cylinders, without perfo

RMRJXEHW–Calcareous tubes made by tube worms on a dead razor clam shell found on the shoreline intertidal zone in Portland Harbour, Dorset England UK GB. There

Elementary text-book of zoology . elementarytextbo0101clau Year: 1884 PORIFEBA. 21' Amongst the calcareous Sponges, the simple Sponge with inhalent pores and terminal osculum (Olt/nthns-iovm) is represented by the stock-forming Leucosolenia (Grantia), which is composed of numerous hollow cylinders. The structure of this sponge has been described by Lieberkiilm. In the Syconidce, the body cavity has a more complicated form. The central space opens into secondary peripheral spaces or radial tubes, which are lined by ciliated cells, and open externally through the inhalent pores (fig. 162). In o Stock Photo

RMT02J6A–Elementary text-book of zoology . elementarytextbo0101clau Year: 1884 PORIFEBA. 21' Amongst the calcareous Sponges, the simple Sponge with inhalent pores and terminal osculum (Olt/nthns-iovm) is represented by the stock-forming Leucosolenia (Grantia), which is composed of numerous hollow cylinders. The structure of this sponge has been described by Lieberkiilm. In the Syconidce, the body cavity has a more complicated form. The central space opens into secondary peripheral spaces or radial tubes, which are lined by ciliated cells, and open externally through the inhalent pores (fig. 162). In o

. Diversions of a naturalist . Natural history. A CORNER IN A MARINE AQUARIUM, PAINTED BY PHILIP HENRY GOSSE, F.R.S. The scene shews the great white Sea Anemone of Weymouth. In front are two richly coloured sea-worms (Serpula) issuing from their calcareous tubes, attached to a dead scallop's shell. The green sea-grass fZosiera) and a translucent pink sea-weed, left and right, complete the picture. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resembl Stock Photo

RMRDYX58–. Diversions of a naturalist . Natural history. A CORNER IN A MARINE AQUARIUM, PAINTED BY PHILIP HENRY GOSSE, F.R.S. The scene shews the great white Sea Anemone of Weymouth. In front are two richly coloured sea-worms (Serpula) issuing from their calcareous tubes, attached to a dead scallop's shell. The green sea-grass fZosiera) and a translucent pink sea-weed, left and right, complete the picture. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resembl

. Economic mollusca of Acadia . Fig. 22.— Teredo navalis. Twice Natural Size. or other obstruction. They never pierce each other's tubes. As the latter are formed, they are lined by a calcareous layer, more or less- thick, and firm enough to allow large pieces of it to be removed entire from the wood after the animal is dead. It is still doubtful what mechanism the animal employs in burrowing. Many naturalists think the valves, armed bj' numerous fine constantly growing teeth, form the apparatus, and that by them the animal eats, or rather files, its way onward. One observer states, that by br Stock Photo

RMMAA8XG–. Economic mollusca of Acadia . Fig. 22.— Teredo navalis. Twice Natural Size. or other obstruction. They never pierce each other's tubes. As the latter are formed, they are lined by a calcareous layer, more or less- thick, and firm enough to allow large pieces of it to be removed entire from the wood after the animal is dead. It is still doubtful what mechanism the animal employs in burrowing. Many naturalists think the valves, armed bj' numerous fine constantly growing teeth, form the apparatus, and that by them the animal eats, or rather files, its way onward. One observer states, that by br

. Animal life as affected by the natural conditions of existence. Animal ecology. 342 THE INFLUENCE OF LIVINa SUBEOUNDINGS. stream of water, produced by the cells of the sponge, cir- culates through the system of tubes thus formed, and this, it would seem, supplies the animal with food, consisting of micro- scopic organisms. By a course of growth and subdivision, after the manner of plant-growth, a compound sponge is fre- quently formed; one, that is to say, which has a number of mouths, more or less, and in which the central cavity—which in calcareous sponges is often quite simple—is transfor Stock Photo

RMPG40X5–. Animal life as affected by the natural conditions of existence. Animal ecology. 342 THE INFLUENCE OF LIVINa SUBEOUNDINGS. stream of water, produced by the cells of the sponge, cir- culates through the system of tubes thus formed, and this, it would seem, supplies the animal with food, consisting of micro- scopic organisms. By a course of growth and subdivision, after the manner of plant-growth, a compound sponge is fre- quently formed; one, that is to say, which has a number of mouths, more or less, and in which the central cavity—which in calcareous sponges is often quite simple—is transfor

RMRJXEJJ–Calcareous tubes made by tube worms on a pebble found on the shoreline intertidal zone at low tide in Portland Harbour, Dorset England UK GB. There ar

. The Cambridge natural history. Zoology. 10 Fig. 149.—Spicules of Alcyonaria, 1, Club of Juncdla ; 2, warted cross of PlezaureUa ; 3, torch of Municella ; 4, needle of Renilla ; 5, warted spindle of Gorgonella ; 6, spicule of Pennatula ; 7, foliate club of Eunicm ; 8, irregular spicule oi Paramuricea ; 9, scale of Primnoa ; 10, spicules of Tnchogorgia. (5 and 10 original, the re- mainder after Kolliker.) TvMpora (the organ-pipe coral) and in Telesto rubra the spicules of the body-walls of the zooids fuse to form perforated calcareous tubes. In some species of Sclerophytum the large spicules o Stock Photo

RMRDKG8Y–. The Cambridge natural history. Zoology. 10 Fig. 149.—Spicules of Alcyonaria, 1, Club of Juncdla ; 2, warted cross of PlezaureUa ; 3, torch of Municella ; 4, needle of Renilla ; 5, warted spindle of Gorgonella ; 6, spicule of Pennatula ; 7, foliate club of Eunicm ; 8, irregular spicule oi Paramuricea ; 9, scale of Primnoa ; 10, spicules of Tnchogorgia. (5 and 10 original, the re- mainder after Kolliker.) TvMpora (the organ-pipe coral) and in Telesto rubra the spicules of the body-walls of the zooids fuse to form perforated calcareous tubes. In some species of Sclerophytum the large spicules o

. O-L a b c Fig. 90. Salmacina dysteri, var. falklandica. a. Collar bristle, b. Thoracic sickle bristle, c. Abdominal bristle. Description. A number of delicate, smooth, white tubes, more or less straight and lying flat on several fragments of a calcareous Polyzoan. The contained worms agree with the common S. dysteri except in the collar bristles (Fig. 90, fl), which do not show the typical gap or notch above the toothed spur. In these specimens the teeth are continued without interruption up the blade. Furthermore, the thoracic "sickle" bristles (Fig. 90, b) appear to be denticulat Stock Photo

RMMCMKEA–. O-L a b c Fig. 90. Salmacina dysteri, var. falklandica. a. Collar bristle, b. Thoracic sickle bristle, c. Abdominal bristle. Description. A number of delicate, smooth, white tubes, more or less straight and lying flat on several fragments of a calcareous Polyzoan. The contained worms agree with the common S. dysteri except in the collar bristles (Fig. 90, fl), which do not show the typical gap or notch above the toothed spur. In these specimens the teeth are continued without interruption up the blade. Furthermore, the thoracic "sickle" bristles (Fig. 90, b) appear to be denticulat

. Animal life as affected by the natural conditions of existence. Animal ecology. 342 THE INFLUENCE OF LIVING SUEHOUNDING.?. stream of water, produced by the cells of the sponge, cir- culates through the system of tubes thus formed, and this, it would seem, supplies the animal with food, consisting of micro- scopic organisms. By a course of growth and subdivision, aftei' the manner of plant-growth, a compound sponge is fre- quently formed; one, that is to say, which has a number of mouths, more or less, and in which the centi'al cavity—which in calcareous sponges is often quite simple—is trans Stock Photo

RMPFYXFT–. Animal life as affected by the natural conditions of existence. Animal ecology. 342 THE INFLUENCE OF LIVING SUEHOUNDING.?. stream of water, produced by the cells of the sponge, cir- culates through the system of tubes thus formed, and this, it would seem, supplies the animal with food, consisting of micro- scopic organisms. By a course of growth and subdivision, aftei' the manner of plant-growth, a compound sponge is fre- quently formed; one, that is to say, which has a number of mouths, more or less, and in which the centi'al cavity—which in calcareous sponges is often quite simple—is trans

RMRJXEN5–Calcareous tubes made by tube worms on a pebble found on the shoreline intertidal zone at low tide in Portland Harbour, Dorset England UK GB. There ar

An old scallop shell that has been colonised by tube worms that live inside calcareous tubes. Black background. Dorset England UK GB Stock Photo

RM2A1563Y–An old scallop shell that has been colonised by tube worms that live inside calcareous tubes. Black background. Dorset England UK GB

Lectures on the comparative anatomy and physiology of the invertebrate animals : delivered at the Royal College of Surgeons . itacrini, the seminal or ovarian receptacles aremuch more numerous, and are of smaller size : they occupy the innerside of each of the pinnules, are covered by the soft perisome, anddischarge their contents by dehiscence. Echinoidea.—The calcareous pieces entering into the compositionof the complex skeleton of the Echinus are those of the shell, of thebuccal apparatus called the lantern, of the ambulacral tubes, andof the pedicellarias. All the Echini are admirable for Stock Photo

RM2AJ1BYH–Lectures on the comparative anatomy and physiology of the invertebrate animals : delivered at the Royal College of Surgeons . itacrini, the seminal or ovarian receptacles aremuch more numerous, and are of smaller size : they occupy the innerside of each of the pinnules, are covered by the soft perisome, anddischarge their contents by dehiscence. Echinoidea.—The calcareous pieces entering into the compositionof the complex skeleton of the Echinus are those of the shell, of thebuccal apparatus called the lantern, of the ambulacral tubes, andof the pedicellarias. All the Echini are admirable for

. The Earth beneath the sea : History . lliije Fig. 5. Electron micrograph of halloysite tubes I'roni the core Capricorn BG 9, 19° Ol'S, 177° 46'E. (By courtesy of Shell Development Corporation, Houston, Texas.) 1958) found a rather uniform rate of build-up of the sea floor in the South Pacific of 0.4 mni'/lO^ years, whereas values of the rate of sedimentation in the North Pacific vary between 0.5 and 10 mm/lO^ years with an overall average around 1-2 mm/lO^ years. These rates of accumulation are for the non-calcareous components of the deposits. Detrital quartz attains values of 25% by weight Stock Photo

RMMAAREM–. The Earth beneath the sea : History . lliije Fig. 5. Electron micrograph of halloysite tubes I'roni the core Capricorn BG 9, 19° Ol'S, 177° 46'E. (By courtesy of Shell Development Corporation, Houston, Texas.) 1958) found a rather uniform rate of build-up of the sea floor in the South Pacific of 0.4 mni'/lO^ years, whereas values of the rate of sedimentation in the North Pacific vary between 0.5 and 10 mm/lO^ years with an overall average around 1-2 mm/lO^ years. These rates of accumulation are for the non-calcareous components of the deposits. Detrital quartz attains values of 25% by weight

. A manual of zoology. Zoology. "^^%?5,'( ( , Fig. 159. Fig. 160. Fig. 15Q.—Ascon stage o£ 5yfa«(/ru (after Maas). c, entoderm; m, mcseclodcrm; o, osculuni; p, ]iores. Fig. iOo.—Section of vall of Sycuiuh'ti ra[>ho}uis (after Scltulze). c, epithelium; en, coliared llagellale cells; m, mesodernt ith eonneelive-lissue cells; 0, eggs; st^ calcareous spicules.. Fig. 161.—Section of Pldh'im (afler F. F. Seliul'eV f, canals leading from ampull-E to cloacal tubes; c, anipull;e; (/, afferent canals; o, oscukun. the surface. On the other hand, there is a distinctly differentiated ento- derm Stock Photo

RMPG3PCY–. A manual of zoology. Zoology. "^^%?5,'( ( , Fig. 159. Fig. 160. Fig. 15Q.—Ascon stage o£ 5yfa«(/ru (after Maas). c, entoderm; m, mcseclodcrm; o, osculuni; p, ]iores. Fig. iOo.—Section of vall of Sycuiuh'ti ra[>ho}uis (after Scltulze). c, epithelium; en, coliared llagellale cells; m, mesodernt ith eonneelive-lissue cells; 0, eggs; st^ calcareous spicules.. Fig. 161.—Section of Pldh'im (afler F. F. Seliul'eV f, canals leading from ampull-E to cloacal tubes; c, anipull;e; (/, afferent canals; o, oscukun. the surface. On the other hand, there is a distinctly differentiated ento- derm

RM2A152N5–An old scallop shell that has been colonised by tube worms that live inside calcareous tubes. Black background. Dorset England UK GB

A pictorial atlas of fossil remains, consisting of coloured illustrations selected from Parkinson's 'Organic remains of a former world,' and Artis's 'Antediluvian phytology.' . re compact masses of the rock. The substance of the corals, beinfsiliceous, resists the action of the cataract, while the softer calcareous matter which filled up theinterstices of the tubes, lamellas, &c. of the zoophytes, is washed away atom by atom; and naturaldissections are formed, which art would in vain attempt to imitate. Dr. Yandell, of the MedicalCollege, Louisville, and Dr. Clapp, of New Albany, have splendid Stock Photo

RM2AWFP16–A pictorial atlas of fossil remains, consisting of coloured illustrations selected from Parkinson's 'Organic remains of a former world,' and Artis's 'Antediluvian phytology.' . re compact masses of the rock. The substance of the corals, beinfsiliceous, resists the action of the cataract, while the softer calcareous matter which filled up theinterstices of the tubes, lamellas, &c. of the zoophytes, is washed away atom by atom; and naturaldissections are formed, which art would in vain attempt to imitate. Dr. Yandell, of the MedicalCollege, Louisville, and Dr. Clapp, of New Albany, have splendid

RM2A15568–An old scallop shell that has been colonised by tube worms that live inside calcareous tubes. Black background. Dorset England UK GB

A treatise on zoology . s ring is radiallysymmetrical and of simple structure, it may be reduced and evenabsent; the stone-canal often retains its primitive opening to theexterior ; the genital tubes are sometimes restricted to the left side ;there are never retractor muscles. In the second group, containingthe Cucumariidae and Molpadiidae, the tentacles are simple orbranched, never peltate; the calcareous ring is much developed,with posterior prolongations, and often bilaterally symmetrical; thestone-canal always opens internally; there are always right and lefttufts of genital tubes; retract Stock Photo

RM2ANB60X–A treatise on zoology . s ring is radiallysymmetrical and of simple structure, it may be reduced and evenabsent; the stone-canal often retains its primitive opening to theexterior ; the genital tubes are sometimes restricted to the left side ;there are never retractor muscles. In the second group, containingthe Cucumariidae and Molpadiidae, the tentacles are simple orbranched, never peltate; the calcareous ring is much developed,with posterior prolongations, and often bilaterally symmetrical; thestone-canal always opens internally; there are always right and lefttufts of genital tubes; retract

RM2A154EB–An old scallop shell that has been colonised by tube worms that live inside calcareous tubes. Black background. Dorset England UK GB

Calcareous tubes that are home to marine worms that have been made on sea shells, in this case a mussel shell washed up on the shore. There are severa Stock Photo

RMREPXY2–Calcareous tubes that are home to marine worms that have been made on sea shells, in this case a mussel shell washed up on the shore. There are severa

The animal kingdom : arranged after its organization, forming a natural history of animals, and an introduction to comparative anatomy . et; andall the surface is covered with pores leading to small tubes which admitwater, probably for the purpose of respiration. On the central disc, buttoward one side of it, there is a stony plate, and below it a canal filledwith calcareous matter ; and it is probable that this is the apparatus bywhich the hard matter of the body is elaborated. There is a sort of verte-brated osseous column in each ray; and some of the species have osseousplates, and spines o Stock Photo

RM2ANJ7CJ–The animal kingdom : arranged after its organization, forming a natural history of animals, and an introduction to comparative anatomy . et; andall the surface is covered with pores leading to small tubes which admitwater, probably for the purpose of respiration. On the central disc, buttoward one side of it, there is a stony plate, and below it a canal filledwith calcareous matter ; and it is probable that this is the apparatus bywhich the hard matter of the body is elaborated. There is a sort of verte-brated osseous column in each ray; and some of the species have osseousplates, and spines o

RMREPXYX–Calcareous tubes that are home to marine worms that have been made on sea shells, in this case a mussel shell washed up on the shore. There are severa

The animal kingdom, arranged after its organization : forming a natural history of animals, and an introduction to comparative anatomy . andall the surface is covered with pores leading to small tubes which admitwater, probably for the purpose of respiration. On the central disc, buttoward one side of it, there is a stony plate, and below it a canal filledwith calcareous matter; and it is probable that this is the apparatus bywhich the hard matter of the body is elaborated. There is a sort of verte-brated osseous column in each ray; and some of the species have osseousplates, and spines on the Stock Photo

RM2AJ8F81–The animal kingdom, arranged after its organization : forming a natural history of animals, and an introduction to comparative anatomy . andall the surface is covered with pores leading to small tubes which admitwater, probably for the purpose of respiration. On the central disc, buttoward one side of it, there is a stony plate, and below it a canal filledwith calcareous matter; and it is probable that this is the apparatus bywhich the hard matter of the body is elaborated. There is a sort of verte-brated osseous column in each ray; and some of the species have osseousplates, and spines on the

Calcareous tubes that are home to marine worms that have been made on sea shells, in this case a slipper limpet shell washed up on the shore. There ar Stock Photo

RMREPXBJ–Calcareous tubes that are home to marine worms that have been made on sea shells, in this case a slipper limpet shell washed up on the shore. There ar

The origin of disease : especially of disease resulting from intrinsic as opposed to extrinsic causes : with chapters on diagnosis, prognosis, and treatment . (X 6.) Femoral artery and vein from an elderly man who died of Brights disease. Bothvessels were converted into rigid bony tubes by calcareous deposit, and had to be treatedwith acid before sections could be cut. The artery looks broken, the intima is irregularlythickened, and there are spots of degeneration of the muscular coat. The intima of thevein is greatly and irregularly thickened. At one place the intima and muscularis arebroken Stock Photo

RM2AJ4W6B–The origin of disease : especially of disease resulting from intrinsic as opposed to extrinsic causes : with chapters on diagnosis, prognosis, and treatment . (X 6.) Femoral artery and vein from an elderly man who died of Brights disease. Bothvessels were converted into rigid bony tubes by calcareous deposit, and had to be treatedwith acid before sections could be cut. The artery looks broken, the intima is irregularlythickened, and there are spots of degeneration of the muscular coat. The intima of thevein is greatly and irregularly thickened. At one place the intima and muscularis arebroken

RMREPXHK–Calcareous tubes that are home to marine worms that have been made on sea shells, in this case a slipper limpet shell washed up on the shore. There ar

On the structure and affinities of the genus Monticulipora and its sub-genera, with critical descriptions of illustrative species . onclusion, though I donot feel disposed to assert positively that M.pavonia, DOrb.,with its various abnormal characters, is an indisputable Mon-ticuliporoid. In Heterodictya, Nich., we have to deal with anundoubted Polyzoon, of the general type of Ptilodictya. Thecolony forms a thin falciform expansion which is composedof two layers of tubes diverging in opposite directions froma definite striated median calcareous lamella, and which isbounded by perfectly definit Stock Photo

RM2AKBPKH–On the structure and affinities of the genus Monticulipora and its sub-genera, with critical descriptions of illustrative species . onclusion, though I donot feel disposed to assert positively that M.pavonia, DOrb.,with its various abnormal characters, is an indisputable Mon-ticuliporoid. In Heterodictya, Nich., we have to deal with anundoubted Polyzoon, of the general type of Ptilodictya. Thecolony forms a thin falciform expansion which is composedof two layers of tubes diverging in opposite directions froma definite striated median calcareous lamella, and which isbounded by perfectly definit

Manual of pathological anatomy . Cortical part of a very granular kidney,containing very numerous microscopic cysts.The tubes are very much degenerated andbroken up. Two Malp. bodies are shown. MORBUS BEIGHTII. 689 tubular venous plexus. There is also often general thickening ofall the coats, rigidity, atheroma, and calcareous degeneration of thearterial wall, with diminution of its calibre, as has been wellfigured by Dr. Lionel Beale. No particular change is observablein the before-mentioned capillaries, or in the veins, except that thelatter often contain firm coagula of blood, which are mor Stock Photo

RM2AM7AG7–Manual of pathological anatomy . Cortical part of a very granular kidney,containing very numerous microscopic cysts.The tubes are very much degenerated andbroken up. Two Malp. bodies are shown. MORBUS BEIGHTII. 689 tubular venous plexus. There is also often general thickening ofall the coats, rigidity, atheroma, and calcareous degeneration of thearterial wall, with diminution of its calibre, as has been wellfigured by Dr. Lionel Beale. No particular change is observablein the before-mentioned capillaries, or in the veins, except that thelatter often contain firm coagula of blood, which are mor

. Relics of primeval life, beginning of life in the dawn of geological time. Vv;vivv*^-< |-J/^/,^. Fig. 45.—Tubular Strutuite of Ccenostroma, Silurian. and which, when sliced and studied microscopically,are found to consist of concentric thin laminae filledin between with a porous mass of calcareous matterpenetrated by an infinity of. tortuous tubes. Formsof this kind have been traced downward into pre-Cambrian beds in Colorado, and as we shall find inNew Brunswick, into the Upper Laurentian itself.They present, however, structural differences from ^ See Figs. 7 and 8, pp. yj^ 39; also Fig. Stock Photo

RM2AFJ63P–. Relics of primeval life, beginning of life in the dawn of geological time. Vv;vivv*^-< |-J/^/,^. Fig. 45.—Tubular Strutuite of Ccenostroma, Silurian. and which, when sliced and studied microscopically,are found to consist of concentric thin laminae filledin between with a porous mass of calcareous matterpenetrated by an infinity of. tortuous tubes. Formsof this kind have been traced downward into pre-Cambrian beds in Colorado, and as we shall find inNew Brunswick, into the Upper Laurentian itself.They present, however, structural differences from ^ See Figs. 7 and 8, pp. yj^ 39; also Fig.

The Cambridge natural history . angle to the surfaces. In many forms minute tubes more orless closely arranged pierce through the fibrous shell-substance;but in some genera (Froductus) they do not reach the outersurface (see p. 468). Allied genera, however, differ much in thepunctate or impunctate character of the shell. Synopsis of Families I. ECARDINES Family : Lingulidae Shell elongated, composed of alternating chitinous and calcareous layers,the latter of which are perforated. Attached by a pedicle passing betweenapices of valves. Arms have no calcified .-^npport.s. (For muscles see Fig. 3 Stock Photo

RM2ANJGW1–The Cambridge natural history . angle to the surfaces. In many forms minute tubes more orless closely arranged pierce through the fibrous shell-substance;but in some genera (Froductus) they do not reach the outersurface (see p. 468). Allied genera, however, differ much in thepunctate or impunctate character of the shell. Synopsis of Families I. ECARDINES Family : Lingulidae Shell elongated, composed of alternating chitinous and calcareous layers,the latter of which are perforated. Attached by a pedicle passing betweenapices of valves. Arms have no calcified .-^npport.s. (For muscles see Fig. 3

The royal natural history . iated sycon, a calcareous sponge found on seaweeds round theBritish coast, forms a white sac about an inch in height, and with a crown ofglassy bristles round the orifice. The vertical cavity of the sac is surrounded by awall of closely packed horizontal tubes, opening at their inner ends into the centralcavity, but externally ending blindly. The central cavity of the sac is lined withflat-cells, and the radial tubes with collar-cells; and the walls of the tubes areperforated with small pores. Here the spaces between and outside the denselypacked tubes are the in-cu Stock Photo

RM2AN329K–The royal natural history . iated sycon, a calcareous sponge found on seaweeds round theBritish coast, forms a white sac about an inch in height, and with a crown ofglassy bristles round the orifice. The vertical cavity of the sac is surrounded by awall of closely packed horizontal tubes, opening at their inner ends into the centralcavity, but externally ending blindly. The central cavity of the sac is lined withflat-cells, and the radial tubes with collar-cells; and the walls of the tubes areperforated with small pores. Here the spaces between and outside the denselypacked tubes are the in-cu

Clinical lectures on the principles and practice of medicine . Fig. 304. Fig. 385. Fig. 366. way converted into a calcareous shell, and the pericardium into an un-yielding mineral box, inclosing the heart. The cardiac valves are alsoespecially liable to these mineral incrustations. A cancerous exudationin the same manner undergoes the calcareous transformation. The mes-enteric glands may not unfrequently be observed to be partly cancerous* Mikroskopischen Pathologischen Anatomie, Taf. xv. Fig. 363. Mineral degeneration of the nerve-cells and tubes of the spinal cord.—(JPoerster.) Fig. 364. Min Stock Photo

RM2AJ4TC0–Clinical lectures on the principles and practice of medicine . Fig. 304. Fig. 385. Fig. 366. way converted into a calcareous shell, and the pericardium into an un-yielding mineral box, inclosing the heart. The cardiac valves are alsoespecially liable to these mineral incrustations. A cancerous exudationin the same manner undergoes the calcareous transformation. The mes-enteric glands may not unfrequently be observed to be partly cancerous* Mikroskopischen Pathologischen Anatomie, Taf. xv. Fig. 363. Mineral degeneration of the nerve-cells and tubes of the spinal cord.—(JPoerster.) Fig. 364. Min

The Victorian naturalist . a band in thevicinity of low sea level on the opencoast, but does not continue up thechannels. On the other hand, Galeolaria themarine worm with a calcareous exo-skeleton, builds its white tubes on rocksurfaces in the surf zone, but notwhere the sea makes a frontal attack.Galeolaria can thus be found invarious sheltered spots along the edgeof the platform, but more extensivelyin the channels. Where best developed,it forms a white band on the channelwall, and the top of the band marksmean sea level. *l/47 Wattle Valley Road, Canterbury.Plate 1 Upper. Near horizontal s Stock Photo

RM2AJ54RR–The Victorian naturalist . a band in thevicinity of low sea level on the opencoast, but does not continue up thechannels. On the other hand, Galeolaria themarine worm with a calcareous exo-skeleton, builds its white tubes on rocksurfaces in the surf zone, but notwhere the sea makes a frontal attack.Galeolaria can thus be found invarious sheltered spots along the edgeof the platform, but more extensivelyin the channels. Where best developed,it forms a white band on the channelwall, and the top of the band marksmean sea level. *l/47 Wattle Valley Road, Canterbury.Plate 1 Upper. Near horizontal s

. A System of natural history : containing scientifci [sic] and popular descriptions of man, quadrupeds, birds, fishes, reptiles and insects . incrusted exteriorly with grains of sand, orfragments of shell, in others solid, calcareous, and homogenous. The greaterpart of the Annelides are carnivorous, sucking the blood of other animals.They are hermaphrodite, but require mutual impregnation. Cuvier dividesthe class of Annelides into three orders :—1. Tubicol^, those in which thebronchise are in the form of tufts, attached to the head or anterior part of thebody, and generally inhabiting tubes. Stock Photo

RM2CPDYMT–. A System of natural history : containing scientifci [sic] and popular descriptions of man, quadrupeds, birds, fishes, reptiles and insects . incrusted exteriorly with grains of sand, orfragments of shell, in others solid, calcareous, and homogenous. The greaterpart of the Annelides are carnivorous, sucking the blood of other animals.They are hermaphrodite, but require mutual impregnation. Cuvier dividesthe class of Annelides into three orders :—1. Tubicol^, those in which thebronchise are in the form of tufts, attached to the head or anterior part of thebody, and generally inhabiting tubes.

. The elements of materia medica and therapeutics (Volume 2) . ed their name from the circumstance of their bearingtubes called polypes. They consist of two parts, a skeleton and afleshy portion. The skeletons vary in their consistence, and alsoin their position relative to the soft parts. They are soft and flexi-ble, or hard and calcareous. They are external and tubular, orinternal and solid. The fleshy portion may be, with respect to theskeleton, either external or internal. It gives origin to fleshy tubes(polypes), each of which, at its external orifice, is surrounded bytentaculcR. The calc Stock Photo

RM2CE24CR–. The elements of materia medica and therapeutics (Volume 2) . ed their name from the circumstance of their bearingtubes called polypes. They consist of two parts, a skeleton and afleshy portion. The skeletons vary in their consistence, and alsoin their position relative to the soft parts. They are soft and flexi-ble, or hard and calcareous. They are external and tubular, orinternal and solid. The fleshy portion may be, with respect to theskeleton, either external or internal. It gives origin to fleshy tubes(polypes), each of which, at its external orifice, is surrounded bytentaculcR. The calc

. On the anatomy of vertebrates [electronic resource] . projections of the scale, fig. 360, d; a middle laminated layer, with365 calcareous granules, ib. e; and the internal layer oflaminae of structureless car-tilage, ib. c. In the Tunny (Thynnusvulgaris) the scales are com-posed of fine, partially ossi-fied, lamina?, between whichare elongated 6 lacuna? orbone-cells: the scale is cancel-lous at its middle part.2 In Le-pidosteus the scale is thicker,is composed of very thin ossi-fied layers, fig. 366,a, perfo-rated by vertical tubes aboutg^thin. diameter, and havingnumerous lacuna? in theirin Stock Photo

RM2CNE9FN–. On the anatomy of vertebrates [electronic resource] . projections of the scale, fig. 360, d; a middle laminated layer, with365 calcareous granules, ib. e; and the internal layer oflaminae of structureless car-tilage, ib. c. In the Tunny (Thynnusvulgaris) the scales are com-posed of fine, partially ossi-fied, lamina?, between whichare elongated 6 lacuna? orbone-cells: the scale is cancel-lous at its middle part.2 In Le-pidosteus the scale is thicker,is composed of very thin ossi-fied layers, fig. 366,a, perfo-rated by vertical tubes aboutg^thin. diameter, and havingnumerous lacuna? in theirin

. Die Alcyoniden der Siboga-expedition. I. Coralliidae. Alcyonaria. Â§ 9. Die wichtigsten Beschreibungen und Diagnosen des Genus Cladochonus M'Coy. des Genus Cladoc/iotuis hat M'Coy dasselbe wie folgt beschrieben^): âGen. Char.: Polypidom of very thick, straight, slender, calcareous tubes, suddenly dilating at short regulÃ¤r distances into large, oblique, cup-shaped terminal Chambers, longitudinally striated within; from the point where the dilatation commences, a second slender tube similar to the first is given off at an angle, varying with the species, and terminating at the same distance a Stock Photo

RMRCPT11–. Die Alcyoniden der Siboga-expedition. I. Coralliidae. Alcyonaria. Â§ 9. Die wichtigsten Beschreibungen und Diagnosen des Genus Cladochonus M'Coy. des Genus Cladoc/iotuis hat M'Coy dasselbe wie folgt beschrieben^): âGen. Char.: Polypidom of very thick, straight, slender, calcareous tubes, suddenly dilating at short regulÃ¤r distances into large, oblique, cup-shaped terminal Chambers, longitudinally striated within; from the point where the dilatation commences, a second slender tube similar to the first is given off at an angle, varying with the species, and terminating at the same distance a

. Diversions of a naturalist. Natural history. A CORNICK IN A .MARINE A(,)UARIU.M. rAINTED );V I'llll.ll HKNKV (;nssK, F. K.s. The scene shews the great white Sea Anemone of Weymouth. In fnint are two richly coloured sea-worms (Serpula) issuing from their calcareous tubes, attached to a dead scallop's shell. The green sea-grass fZostera) and a translucent pink sea-weed, left and ri'jht, complete the picture. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfec Stock Photo

RMRCCF49–. Diversions of a naturalist. Natural history. A CORNICK IN A .MARINE A(,)UARIU.M. rAINTED );V I'llll.ll HKNKV (;nssK, F. K.s. The scene shews the great white Sea Anemone of Weymouth. In fnint are two richly coloured sea-worms (Serpula) issuing from their calcareous tubes, attached to a dead scallop's shell. The green sea-grass fZostera) and a translucent pink sea-weed, left and ri'jht, complete the picture. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfec

. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. s|H)nge.] Sponge, circular, button-shaped or discoiti, and conHititing of numerous thin, calcareous laminu!, having a con- centric structure and tilled with minute canals or interstices. The structure has some resemblance to that of Strephochetm r'u'hmondtnM, but the laniinti> are much thinner, and the interlaminar spaces are much less marked, and no vertical tubes have been found with- in them. Tlnit was a fre Stock Photo

RMRJ238T–. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. s|H)nge.] Sponge, circular, button-shaped or discoiti, and conHititing of numerous thin, calcareous laminu!, having a con- centric structure and tilled with minute canals or interstices. The structure has some resemblance to that of Strephochetm r'u'hmondtnM, but the laniinti> are much thinner, and the interlaminar spaces are much less marked, and no vertical tubes have been found with- in them. Tlnit was a fre

. The animal kingdom : arranged after its organization; forming a natural history of animals, and an introduction to comparative anatomy. Zoology. THE FIRST ORDER OF ANNELIDES, THE TUBICOL^. Some species of this division form a homogeneous, calcareous tube, which probably results from their transudation, like the shells of the MoUusks, but to which the muscles do not adhere; others construct tubes, by agglutinating grains of sand, fragments of shells, and particles of mud, which they join by means of a membrane, which likewise is doubtless transuded; lastly, there are some, the tubes of which Stock Photo

RMRN4T84–. The animal kingdom : arranged after its organization; forming a natural history of animals, and an introduction to comparative anatomy. Zoology. THE FIRST ORDER OF ANNELIDES, THE TUBICOL^. Some species of this division form a homogeneous, calcareous tube, which probably results from their transudation, like the shells of the MoUusks, but to which the muscles do not adhere; others construct tubes, by agglutinating grains of sand, fragments of shells, and particles of mud, which they join by means of a membrane, which likewise is doubtless transuded; lastly, there are some, the tubes of which

. The dawn of life [microform] : being the history of the oldest known fossil remains, and their relations to geological time, and to the development of the animal kingdom. Paleontology; Life; Paléontologie; Vie. 106 THE DAWN OF LIFE. the mass, as fibres of oxide of iron or manganese have grown in the silica of moss-agate ; but this theory would be encompassed with nearly as great mechanical and chemical difficulties. The only rational view that any one can take of the process is, that the calcareous matter was the original substance, and that it had delicate tubes traversing it which became i Stock Photo

RMRJ6PR2–. The dawn of life [microform] : being the history of the oldest known fossil remains, and their relations to geological time, and to the development of the animal kingdom. Paleontology; Life; Paléontologie; Vie. 106 THE DAWN OF LIFE. the mass, as fibres of oxide of iron or manganese have grown in the silica of moss-agate ; but this theory would be encompassed with nearly as great mechanical and chemical difficulties. The only rational view that any one can take of the process is, that the calcareous matter was the original substance, and that it had delicate tubes traversing it which became i

RMRD3HAB–. Dawn of life: being the history of the oldest known fossil remains, and their relation to geological time and to the development of the animal kingdom. Paleontology; Eozoon; Life. 106 THE DAWN OF LIFE. tlie mass, as fibres of oxide of iron or manganese liave grown in tlie silica of moss-agate ; but tliis theory would be encompassed with nearly as great mechanical and chemical difficulties. The only rational view that any one can take of the process is, that the calcareous matter was the original substance, and that it had delicate tubes traversing it which became injected with serpentine. Th

. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. Structure of Heteropora neozelanica, Busk 333 figure (fig. 1, D) shows the mouths of the interstitial tubes or cancelli, as well as some of those belonging to the proper zocecia, to be closed by a thin calcareous pellicle, which is left after incineration, and which exhibits the pecu- liarity that it is perforated with numerous minute apertures opposite to the mouth of each of the interstitial tubes. The Pier. 1.. A. A fragment of the polyzoary of Heteropora neozelanica, Busk, Stock Photo

RMRMP86G–. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. Structure of Heteropora neozelanica, Busk 333 figure (fig. 1, D) shows the mouths of the interstitial tubes or cancelli, as well as some of those belonging to the proper zocecia, to be closed by a thin calcareous pellicle, which is left after incineration, and which exhibits the pecu- liarity that it is perforated with numerous minute apertures opposite to the mouth of each of the interstitial tubes. The Pier. 1.. A. A fragment of the polyzoary of Heteropora neozelanica, Busk,

RMRDC7K3–. Fossil plants : for students of botany and geology . Paleobotany. 124 THALLOPHYTA. [CH. tubular structure in calcareous nodules obtained from a rock of Ordovician age in the Girvan district of Scotland. These Authors considered the tubes to be those of some Khizopod, and proposed to designate the fossil Girvanella. Ginanella (fig. 26). Messrs Nicholson and Etheridge defined the genus as follows:— "Microscopic tubuli, with arenaceous or calcareous (?) walls, flexuous or contorted, circular in section, forming loosely compacted masses. The tubes, apparently simple cylinders, without perfo

. Animal life as affected by the natural conditions of existence. Animal ecology. 342 THE INFLUENCE OF LIVING SURROUNDINGS. stream of water, produced by the cells of the sponge, cir- culates through the system of tubes thus formed, and this, it would seem, supplies the animal with food, consisting of micro- scopic organisms. By a course of growth and subdivision, after the manner of plant-growth, a compound sponge is fre- quently formed; one, that is to say, which has a number of mouths, more or less, and in which the central cavity—which in calcareous sponges is often cpiite simple—is transfo Stock Photo

RMRN4Y86–. Animal life as affected by the natural conditions of existence. Animal ecology. 342 THE INFLUENCE OF LIVING SURROUNDINGS. stream of water, produced by the cells of the sponge, cir- culates through the system of tubes thus formed, and this, it would seem, supplies the animal with food, consisting of micro- scopic organisms. By a course of growth and subdivision, after the manner of plant-growth, a compound sponge is fre- quently formed; one, that is to say, which has a number of mouths, more or less, and in which the central cavity—which in calcareous sponges is often cpiite simple—is transfo

. Comparative anatomy and physiology. 60 COMPARATIVE ANATOMY AND PHYSIOLOGY. term skeleton; this skeleton consists of a large number of firm calcareous plates closely soldered together. Within, or just outside, these plates there runs down every arm, or branch of an arm, a canal which contains water, and from this canal there are given off more or less deli- cate tubes (the so-called tube-feet) which are connected with the canal;. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illus Stock Photo

RMREFJ5P–. Comparative anatomy and physiology. 60 COMPARATIVE ANATOMY AND PHYSIOLOGY. term skeleton; this skeleton consists of a large number of firm calcareous plates closely soldered together. Within, or just outside, these plates there runs down every arm, or branch of an arm, a canal which contains water, and from this canal there are given off more or less deli- cate tubes (the so-called tube-feet) which are connected with the canal;. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illus

RMRDHF19–. Animal life as affected by the natural conditions of existence. Animal ecology. 342 THE INFLUENCE OF LIVINa SUBEOUNDINGS. stream of water, produced by the cells of the sponge, cir- culates through the system of tubes thus formed, and this, it would seem, supplies the animal with food, consisting of micro- scopic organisms. By a course of growth and subdivision, after the manner of plant-growth, a compound sponge is fre- quently formed; one, that is to say, which has a number of mouths, more or less, and in which the central cavity—which in calcareous sponges is often quite simple—is transfor

. The biology of marine animals. Marine animals; Physiology, Comparative. 654 THE BIOLOGY OF MARINE ANIMALS mucoid material in which calcium carbonate is deposited (Fig. 15.9). This is largely in the form of aragonite (Pomatoceros). There is no organic union between the tube and the animal. The tubes of serpulids have charac- teristic shapes and arrangements, varying from species to species. They are solitary (Spirorbis), aggregated (Serpula), semicolonial (Fibgrana) or cemented together to form crusts or masses (Pomatoleios). The anterior. Fig. 15.9. Polychaete Tubes (Left) Calcareous tube of Stock Photo

RMRHJYDX–. The biology of marine animals. Marine animals; Physiology, Comparative. 654 THE BIOLOGY OF MARINE ANIMALS mucoid material in which calcium carbonate is deposited (Fig. 15.9). This is largely in the form of aragonite (Pomatoceros). There is no organic union between the tube and the animal. The tubes of serpulids have charac- teristic shapes and arrangements, varying from species to species. They are solitary (Spirorbis), aggregated (Serpula), semicolonial (Fibgrana) or cemented together to form crusts or masses (Pomatoleios). The anterior. Fig. 15.9. Polychaete Tubes (Left) Calcareous tube of

. The animal kingdom, arranged after its organization, forming a natural history of animals, and an introduction to comparative anatomy. Zoology. Fig". 193.—Svlli • monilmris, with one of its locomotive organs and setigerous append ige attached thereto. THE FIRST ORDER OF ANXKLIDES. THE TUBICOL.E. Some species of this division form a homogeneous, calcareous tube, which probably results from their transudation, like the shells of the Mollusks, but to which the muscles do not adhere ; others construct tubes, by agglutinating grains of sand, fragments of shells, and particles of mud, which t Stock Photo

RMRN4TW7–. The animal kingdom, arranged after its organization, forming a natural history of animals, and an introduction to comparative anatomy. Zoology. Fig". 193.—Svlli • monilmris, with one of its locomotive organs and setigerous append ige attached thereto. THE FIRST ORDER OF ANXKLIDES. THE TUBICOL.E. Some species of this division form a homogeneous, calcareous tube, which probably results from their transudation, like the shells of the Mollusks, but to which the muscles do not adhere ; others construct tubes, by agglutinating grains of sand, fragments of shells, and particles of mud, which t

. A textbook of invertebrate morphology [microform]. Invertebrates; Morphology (Animals); Invertébrés; Morphologie (Animaux). § I 6. Order Hydrocorallinse. The Hydrocoralliuffi are colonial marine forms represented by the Stag's-horn Coral, Millepora, and characterized by the deusely ramified ccenosarcal tubes being enclosed in a mass of carbonate of lime secreted by the ccenosarcal ectoderm aud taking the place of the perisarc. From minute pores on the surface of this calcareous mass, the corallum, the hydrauths protrude and present a well-marked polymorphism. The pores are arranged in groups Stock Photo

RMREPHMN–. A textbook of invertebrate morphology [microform]. Invertebrates; Morphology (Animals); Invertébrés; Morphologie (Animaux). § I 6. Order Hydrocorallinse. The Hydrocoralliuffi are colonial marine forms represented by the Stag's-horn Coral, Millepora, and characterized by the deusely ramified ccenosarcal tubes being enclosed in a mass of carbonate of lime secreted by the ccenosarcal ectoderm aud taking the place of the perisarc. From minute pores on the surface of this calcareous mass, the corallum, the hydrauths protrude and present a well-marked polymorphism. The pores are arranged in groups

. Specimens of Eozoon canadense and their geological and other relations [microform]. Paleontology; Animal remains (Archaeology); Paléontologie; Restes d'animaux (Archéologie). 46 On i^i>erimeHS of Eozonn CanwknuH and vormicniar prooessos projoctinn from tluMr surfaces. (Fi)-'. 14.) At lirsl sight tlieso suggest tlifj idea of spiciilos ; but I think it on the whole moro Hkoly that they are casts of cavities and tubes belonging to Bonio calcareous Foraniiniforal organism whic^h has disapi^eared. Similar bodies, found in the linicstoiie of Havana, have been described by (liiinbcl, who interpr Stock Photo

RMRJ5WC3–. Specimens of Eozoon canadense and their geological and other relations [microform]. Paleontology; Animal remains (Archaeology); Paléontologie; Restes d'animaux (Archéologie). 46 On i^i>erimeHS of Eozonn CanwknuH and vormicniar prooessos projoctinn from tluMr surfaces. (Fi)-'. 14.) At lirsl sight tlieso suggest tlifj idea of spiciilos ; but I think it on the whole moro Hkoly that they are casts of cavities and tubes belonging to Bonio calcareous Foraniiniforal organism whic^h has disapi^eared. Similar bodies, found in the linicstoiie of Havana, have been described by (liiinbcl, who interpr

. Cassell's natural history. Animals; Animal behavior. TES TUBE-MAKERS. feet, with two hooked set* and cirri or pimples. There are no blood-vessels. These curious live on the surface of Comatulae, kinds of Echinoderms. Their larvaj are ciliated all over, and the head and feet develop gradually. Probably the position of the worm is amongst the Polychicta. SUB-OEDER TUBICOL.E.—THE TUBE- MAKERS. These worms live in more or less solid tubes, which they construct of diflerent sub- stances such as mud and excreted mucus mixed with calcareous matter, gi-ains of sand and pieces of shells. Some live in Stock Photo

RMRFP9M6–. Cassell's natural history. Animals; Animal behavior. TES TUBE-MAKERS. feet, with two hooked set* and cirri or pimples. There are no blood-vessels. These curious live on the surface of Comatulae, kinds of Echinoderms. Their larvaj are ciliated all over, and the head and feet develop gradually. Probably the position of the worm is amongst the Polychicta. SUB-OEDER TUBICOL.E.—THE TUBE- MAKERS. These worms live in more or less solid tubes, which they construct of diflerent sub- stances such as mud and excreted mucus mixed with calcareous matter, gi-ains of sand and pieces of shells. Some live in

. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. 330 Mr. F. Chapman on the either of a single tent-like chamber or of a number of such chambers connected by adherent stoloniferous tubes.'' The structure of the test as belonging to the Trochamminince^ is "thin, composed of minute sand-grains incorporated with calcareous or other inorganic cement, or embedded in a chitinous membrane ; exterior smooth, often polished ; in- terior smooth or (rarely) reticulated ; never labyrinthic." When a thin vertical section of th Stock Photo

RMRMNAGJ–. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. 330 Mr. F. Chapman on the either of a single tent-like chamber or of a number of such chambers connected by adherent stoloniferous tubes.'' The structure of the test as belonging to the Trochamminince^ is "thin, composed of minute sand-grains incorporated with calcareous or other inorganic cement, or embedded in a chitinous membrane ; exterior smooth, often polished ; in- terior smooth or (rarely) reticulated ; never labyrinthic." When a thin vertical section of th

. The Cambridge natural history. Zoology. 258 COELENTERATA HYDROZOA vertical tube divided into sections by horizontal calcareous plates (Fig. 129, Tab). These plates are the "tabulae," and constitute the character upon which Millepora was formerly placed in the now discarded group of Tabulate corals. The coral skeleton is also perforated by a very fine reticulum of canals, by which the pore-tubes are brought into communica-. FiG. 128.—A portion of a dried colony of Millepora, showing the larger pores (gastro- pores) surrounded by cycles of smaller pores (daotylopores). At the edges t Stock Photo

RMRDKGJY–. The Cambridge natural history. Zoology. 258 COELENTERATA HYDROZOA vertical tube divided into sections by horizontal calcareous plates (Fig. 129, Tab). These plates are the "tabulae," and constitute the character upon which Millepora was formerly placed in the now discarded group of Tabulate corals. The coral skeleton is also perforated by a very fine reticulum of canals, by which the pore-tubes are brought into communica-. FiG. 128.—A portion of a dried colony of Millepora, showing the larger pores (gastro- pores) surrounded by cycles of smaller pores (daotylopores). At the edges t

RMRDD8HJ–. Animal life as affected by the natural conditions of existence. Animal ecology. 342 THE INFLUENCE OF LIVING SUEHOUNDING.?. stream of water, produced by the cells of the sponge, cir- culates through the system of tubes thus formed, and this, it would seem, supplies the animal with food, consisting of micro- scopic organisms. By a course of growth and subdivision, aftei' the manner of plant-growth, a compound sponge is fre- quently formed; one, that is to say, which has a number of mouths, more or less, and in which the centi'al cavity—which in calcareous sponges is often quite simple—is trans

. Animal biology. Zoology; Biology. 208 METAZOAN PHYLA small calcareous plates. The madreporite is internal. Tube feet are present and serve as organs for clinging and for locomotion. One type of sea cucumber is represented by those which conceal themselves in the crevices between rocks and which have the tube feet all around the body in five double rows. Some of the tube feet adjacent to the mouth, as well as the tentacles, are used in procuring food. A cloaca is present in a typical sea cucumber and contains the openings of two long branched tubes, the respiratory trees (Fig. 122). Respirati Stock Photo

RMRN5JMK–. Animal biology. Zoology; Biology. 208 METAZOAN PHYLA small calcareous plates. The madreporite is internal. Tube feet are present and serve as organs for clinging and for locomotion. One type of sea cucumber is represented by those which conceal themselves in the crevices between rocks and which have the tube feet all around the body in five double rows. Some of the tube feet adjacent to the mouth, as well as the tentacles, are used in procuring food. A cloaca is present in a typical sea cucumber and contains the openings of two long branched tubes, the respiratory trees (Fig. 122). Respirati

$. Principles of economic zoo?logy. Zoology, Economic. 52 BRANCH ECHINODEEMATA near the coast, where the ova are fertihzed in the water. Echino- derms of the same species are often gregarious. The water-vascular system is a marked characteristic of echinoderms (Fig. 41). It begins externally with the cal- -cye spot. ^yliinc I iit'i ri'ii 'mvsclci of the pyloiic coica ' *' '^^ Fig. 41.—Dissection of a starfish {AMerias sp.). (From Kellogg.) careous perforated marlreporic i)latc which is connected h a calcareous (Stone) can;d with tlu^ central ring around the mouth, from which tubes proceed alon Stock Photo$

RMRDT2GW–. Principles of economic zoo?logy. Zoology, Economic. 52 BRANCH ECHINODEEMATA near the coast, where the ova are fertihzed in the water. Echino- derms of the same species are often gregarious. The water-vascular system is a marked characteristic of echinoderms (Fig. 41). It begins externally with the cal- -cye spot. ^yliinc I iit'i ri'ii 'mvsclci of the pyloiic coica ' *' '^^ Fig. 41.—Dissection of a starfish {AMerias sp.). (From Kellogg.) careous perforated marlreporic i)latc which is connected h a calcareous (Stone) can;d with tlu^ central ring around the mouth, from which tubes proceed alon

. Advances in marine biology: volume 17. Coral fisheries. ,^. 20. The Corallina incradata, from the Weft- 25. Indies. 21. One of the joints of its natural fize. 26. 22. The fame magnified a little, to (hew its pores in its calcareous furface. 23. Part of the infide tubes of the joint, of 27. their natural fize. 24. The fame magnified, to £hcw the openings of the cells on the furface, con- nedled together. A perpendicular feftion of half of one of thefe joints. The fame magnified, to fhew the figure of the vefTels leading to the fuckers in the calcareous furface. A piece of the calcareous furfa Stock Photo

RMRR2PNT–. Advances in marine biology: volume 17. Coral fisheries. ,^. 20. The Corallina incradata, from the Weft- 25. Indies. 21. One of the joints of its natural fize. 26. 22. The fame magnified a little, to (hew its pores in its calcareous furface. 23. Part of the infide tubes of the joint, of 27. their natural fize. 24. The fame magnified, to £hcw the openings of the cells on the furface, con- nedled together. A perpendicular feftion of half of one of thefe joints. The fame magnified, to fhew the figure of the vefTels leading to the fuckers in the calcareous furface. A piece of the calcareous furfa

. An introduction to zoology, with directions for practical work (invertebrates). 88 INTRODUCTION TO ZOOLOGY chap. arranged in the form of two spirally curved plates (Fig. 42). Between the bases of these two plates is the mouth. Serpula secretes its own tube, which is formed â of a calcareous substance given out by the body; usually several of these white limy tubes are found together. These worms live in rather deep water, with the curved tubes attached to some rock at their lower ends, but with their upper larger ends free. From the upper end projects a pair of often brilliantly coloured, sc Stock Photo

RMRDGHCA–. An introduction to zoology, with directions for practical work (invertebrates). 88 INTRODUCTION TO ZOOLOGY chap. arranged in the form of two spirally curved plates (Fig. 42). Between the bases of these two plates is the mouth. Serpula secretes its own tube, which is formed â of a calcareous substance given out by the body; usually several of these white limy tubes are found together. These worms live in rather deep water, with the curved tubes attached to some rock at their lower ends, but with their upper larger ends free. From the upper end projects a pair of often brilliantly coloured, sc

. The American beaver and his works [microform]. Beavers; Castors. 302 APPENDICES. several layers of oonuective tissue, lined by a tender membrane, which is colored by the secretion, and exhibits minute follicular apertures. The castoreum is light or dark yellow in different cases, viscid, adhesive, gritty from the presence of calcareous mat- ter, and has a strong, peculiar odor. Under the microscope, it shows granular and epithelial matter, and spherical crystals of Fia. 2.. Drawn by W. W. FAy. Note to Figures 2 and 3. 1. Uterus and Fallopian tubes. 7. Cloacal cavity laid open—above 2. Bladil Stock Photo

RMRJ23WA–. The American beaver and his works [microform]. Beavers; Castors. 302 APPENDICES. several layers of oonuective tissue, lined by a tender membrane, which is colored by the secretion, and exhibits minute follicular apertures. The castoreum is light or dark yellow in different cases, viscid, adhesive, gritty from the presence of calcareous mat- ter, and has a strong, peculiar odor. Under the microscope, it shows granular and epithelial matter, and spherical crystals of Fia. 2.. Drawn by W. W. FAy. Note to Figures 2 and 3. 1. Uterus and Fallopian tubes. 7. Cloacal cavity laid open—above 2. Bladil

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