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 366
THE MICROSCOPE IN THE PAST AND IN THE FUTURE. 345 It is horizontal (fig. 215), and possesses a rapid movement by rackand pinion, and a slow movement by screw. … Fig. 215. The tube contained three lenses,tubes, giving different magnifications.
Microscopy
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