The American family physician : or, Domestic guide to health : for the use of physicians, families, plantations, ships, travelers, etc. . low, hemay p r o e u re thehigher powers, polar-ise o p e, diaphragm,&c, should he desirethem. The inch ob-jective is about 60diameters, or magni-Spencers Students Microscope. fies the object about 3,600 times superficially; the quarter-inch is about 300 diameters, magnify-ing the object 90,000 times superficially. If the quarter-inch objective onlyis taken, the price is $30; but all who are able should procure both ob-jectives. Messrs J. & W. Grunow, of New

The American family physician : or, Domestic guide to health : for the use of physicians, families, plantations, ships, travelers, etc. . low, hemay p r o e u re thehigher powers, polar-ise o p e, diaphragm,&c, should he desirethem. The inch ob-jective is about 60diameters, or magni-Spencers Students Microscope. fies the object about 3,600 times superficially; the quarter-inch is about 300 diameters, magnify-ing the object 90,000 times superficially. If the quarter-inch objective onlyis taken, the price is $30; but all who are able should procure both ob-jectives. Messrs J. & W. Grunow, of New Stock Photo
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1482 x 1686 px | 25.1 x 28.5 cm | 9.9 x 11.2 inches | 150dpi

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The American family physician : or, Domestic guide to health : for the use of physicians, families, plantations, ships, travelers, etc. . low, hemay p r o e u re thehigher powers, polar-ise o p e, diaphragm, &c, should he desirethem. The inch ob-jective is about 60diameters, or magni-Spencers Students Microscope. fies the object about 3, 600 times superficially; the quarter-inch is about 300 diameters, magnify-ing the object 90, 000 times superficially. If the quarter-inch objective onlyis taken, the price is $30; but all who are able should procure both ob-jectives. Messrs J. & W. Grunow, of New Haven, Conn., make excellent micro-scopes, which have thus far given satisfaction to all who have used them. Inthis country, I believe they stand second, only to the above firm of Spencer& Eaton. They also manufacture students microscopes, with inch andquarter-inch object-glasses and two eye-glasses, for $55, giving magnifyingpowers of about 30, 50, 200 and 350 diameters. The above instruments of these two makers are mounted each on a tripodbase, and uprights of japanned cast-iron, with joint to incline the body at any. = STIUMN- 172 AMERICAN FAMILY PHYSICIAN. angle desired; the stage is large, and plain, with a spring clamp to hold theslides containing the objects, and each instrument is provided with a concavemirror. (For manner of using the microscope, description of microscopes, &c, see The Microscopisfs Companion^ or a Popular Manual of PracticalMicroscopy, &c, by J. King, M. IV) Fig. 14.

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