The microscope : its construction and management : including technique, photo-micrography, and the past and future of the microscope (1893)
Heurck, Henri van, 1838-1909 · London : C. Lockwood ; New York : D. Van Nostrand Co. · leaf 274
n prism, which can, when desired, by means of a rack andpinion, be introduced across the path of the rays coming from theobjective. Every facility is thus obtained for putting the object in theposition required, for arranging the illumination in the best manner, &c.;and when all is found to be… … Fig. 169. 2 54 PHOTO-MICROGRAPHY.
Microscopy
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