The microscope; an introduction to microscopic methods and to histology (1901)
Gage, Simon Henry, 1851-1944 · Ithaca, N.Y. Comstock publishing company · leaf 249
entimeters or thediaphragm cannot be satisfactorily focused on the screen. The X 4projection ocular can be focused with the bellows much shorter. Foreither projection ocular the screen distance can be extended almostindefinitely. When the diaphragm is sharply focused on the screen, the micro-scope…
Microscopy
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