152. Zeiss Anas-tigmat Objective of about85 millimeters equivalentfocus for photo-micro-graphs at a magnificationof 2 to is diameters. Ex-cellent results were ob-tained ivith this, and theother short focused anas-tigmats. On the zvholethe results ivere more sat-isfactory when the lenswas used right… … CH. VIII.] PHO TO-MICROCRA PH } 197 than for ordinary photography. The ordinary negative is liable tohave too much contrast, but this is rarely the case with photo-micro-graphs. Any good developer may be used. One can as a rule do nobetter than to follow the directions accompanying the plates…
Microscopy
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