. The illustrated natural history [microform]. Reptiles; Fishes; Mollusks; Natural history; Reptiles; Poissons; Mollusques; Sciences naturelles. PELON/E.V- SEA-SQUIRT.—Xscird'nm hijaUmim. 'I'flona'a PDn'iifjnta. HOLTESIA.—Ri'ffIIin reiii/ormis. SYNTKTIIYS.—.Siiii(oHi!/s Hebridicus. CYNTHIA.—r.i/iif/ii(! motiis, 130TUYI.LUS. —IlotnjUm inlycydui. CLAVELLINA. —t7i'(T(/iH« kpidifomiis. So strange are many of the structures, and so imc xpocted arc many of the habits of these creatures, that zoologists are often in great doubt as to their true position in the natural kingdom. For, while many anatomi

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. The illustrated natural history [microform]. Reptiles; Fishes; Mollusks; Natural history; Reptiles; Poissons; Mollusques; Sciences naturelles. PELON/E.V- SEA-SQUIRT.—Xscird'nm hijaUmim. 'I'flona'a PDn'iifjnta. HOLTESIA.—Ri'ffIIin reiii/ormis. SYNTKTIIYS.—.Siiii(oHi!/s Hebridicus. CYNTHIA.—r.i/iif/ii(! motiis, 130TUYI.LUS. —IlotnjUm inlycydui. CLAVELLINA. —t7i'(T(/iH« kpidifomiis. So strange are many of the structures, and so imc xpocted arc many of the habits of these creatures, that zoologists are often in great doubt as to their true position in the natural kingdom. For, while many anatomi Stock Photo
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. The illustrated natural history [microform]. Reptiles; Fishes; Mollusks; Natural history; Reptiles; Poissons; Mollusques; Sciences naturelles. PELON/E.V- SEA-SQUIRT.—Xscird'nm hijaUmim. 'I'flona'a PDn'iifjnta. HOLTESIA.—Ri'ffIIin reiii/ormis. SYNTKTIIYS.—.Siiii(oHi!/s Hebridicus. CYNTHIA.—r.i/iif/ii(! motiis, 130TUYI.LUS. —IlotnjUm inlycydui. CLAVELLINA. —t7i'(T(/iH« kpidifomiis. So strange are many of the structures, and so imc xpocted arc many of the habits of these creatures, that zoologists are often in great doubt as to their true position in the natural kingdom. For, while many anatomi
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. The illustrated natural history [microform]. Reptiles; Fishes; Mollusks; Natural history; Reptiles; Poissons; Mollusques; Sciences naturelles. PELON/E.V- SEA-SQUIRT.—Xscird'nm hijaUmim. 'I'flona'a PDn'iifjnta. HOLTESIA.—Ri'ffIIin reiii/ormis. SYNTKTIIYS.—.Siiii(oHi!/s Hebridicus. CYNTHIA.—r.i/iif/ii(! motiis, 130TUYI.LUS. —IlotnjUm inlycydui. CLAVELLINA. —t7i'(T(/iH« kpidifomiis. So strange are many of the structures, and so imc xpocted arc many of the habits of these creatures, that zoologists are often in great doubt as to their true position in the natural kingdom. For, while many anatomical details are clo.sely analogous to those of the molluscs, others are equally analogous to those of the higher zoophytes, and it is not always easy to hold the balances with an even hand. Ill these curious beings we tiiid the first indications of ju'opagation by buds springing from the body of the parent just as a bud springs from the branch of a tree, and the perplexing alternation system is sometimes found in the Tunicata. Both these systems will he explainetl when we conu' to describe the zoophytes. Without enumerating the various details of anatomical structure in these creatures, we may mention that the animal is composed of two sacs, one inside the other, and that the functions of nutrition and respiration are performed, as in the bivalves, by means of two orifices, one of which admits and the other expels the water, which laves the respiratory apjjaratus and brings food to the organs of nutrition. In our present arrangement, which is that followed by .Mr. Woodward, {he Tunicata are divided into three families, easily distinguishable by the eye. The members of the first group lire called Solitary A.scidians, tho.se of the second Social, and those of the third. Compound Ascidians, their characters being sulfieiently exjilained by their names. The name Ascidian is of Greek origin, and is the diminutive uf a word signifying a water- skin, such as is used in th