The microscope; an introduction to microscopic methods and to histology (1899)
Gage, Simon Henry, 1851-1944 · Ithaca, N. Y., Comstock publishing company · leaf 45
like one of the combinations of an objective I and a able convex field lens. The field-lens is in the focus of tin- eye lens and thi 24 MICROSCOPE AND ACCESSORIES. \_CH. I. \ 35. Huygenian Ocular.—A negative ocular designed by Huygens for the tele-scope, but adapted also to the microscope. It is…
Microscopy -- Technique
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