. The microscope and its revelations. FIG, 188.—Swifts histological and physiological microscope (1894). 236 THE HISTORY AND DEVELOP3IENT OF THE MICROSCOPE rack and pinion, while the fine adjustment is the now celebratedlever employed liy this firm. One revolution of the milled head. FIG. IMI. Widsons Fram microscope (1898). • the :;,11,,th of an inch. we have seen (p. 170,••U11-111 is sound in principle. ;md in practice all FIFTH AND SIXTH CLASSES OF MICROSCOPES 237 that need be desired. The stage has the horseshoe-shaped sub-stage fitting, as shown in the illustration, may b
. The microscope and its revelations. FIG, 188.—Swifts histological and physiological microscope (1894). 236 THE HISTORY AND DEVELOP3IENT OF THE MICROSCOPE rack and pinion, while the fine adjustment is the now celebratedlever employed liy this firm. One revolution of the milled head. FIG. IMI. Widsons Fram microscope (1898). • the :;,11,,th of an inch. we have seen (p. 170,••U11-111 is sound in principle. ;md in practice all FIFTH AND SIXTH CLASSES OF MICROSCOPES 237 that need be desired. The stage has the horseshoe-shaped sub-stage fitting, as shown in the illustration, may be turnedaside out of the optical axis, and a compound sub-stage may be madewith the instrument if desired. Throughout, the working parts aresprung, and wear may be compensated by adjusting screws. Wecannot speak too highly of the enterprise and skill shown in the designand manufacture of this instrument; and yet the student will findthat, good as it is, it is one of the least costly instruments of its class. There is a microscope manufactured by Messrs. Zeiss, known as Stand VI. A, which comes to about the same cost as the above, andwhich we illustrate in fig. 190. It is of course a strictly Continentalform, having a fixed stage 3| ins. square. The coarse adjustment isb
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmicrosc, bookyear1901
