The microscope; an introduction to microscopic methods and to histology (1901)
Gage, Simon Henry, 1851-1944 · Ithaca, N.Y. Comstock publishing company · leaf 282
tainty unless there issome kind of guide. The best one found so far is a mask on the backof the slide with an opening for the preparation Lto be shown. Thismask should be made of black paper. One can cut the holes in it withscissors or with ticket punches. With the specimens properly masked,and the… … 1 Homo 5 Slide 10 Sec8 79 20m 100 1901 Fig. 213. Slide of serial sections with a black mask, perforated over the sec-tions to be demonstrated with the projection microscope. This mask is put on theback of the slide, not on the cover-glass. Unless one has a mask something like this the light is so…
Microscopy
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