The microscope; an introduction to microscopic methods and to histology (1901)
Gage, Simon Henry, 1851-1944 · Ithaca, N.Y. Comstock publishing company · leaf 150
4 Fig. 119. Abbes Micro-spectroscope. Fig. 120. Longitudinal Section of Slit Mechanism separately. the whole instrument. {Plan view, Full size.) (% Full size.) The eye lens is adjustable so as to accurately focus on the slit situated betweenthe lenses. The mechanism for contracting and expanding…
Microscopy
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