Fig. 159. Slide of several sections with a black mask. The mask is per-forated over the sections to be demonstrated with the microscope or the fjection tnicroscope. It is put on the hack of the slide and not on the coiglass. Unless one has a mash something like this the light is m> dazzling that… … Fig. 160. Projection Microscope. This figure illustrates a modernjection microscope with an arc light for radiant. Such a projection m:scope is available whenever there is an e/e< trie current.- and is of the g < ■:use in projecting microscopic objects ranging front c> mm, to ,\, of a…
Microscopy
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