e picture will not be sharp no matter howaccurately one may focus Indeed, so necessary is the coincidence of the plane ofthe focusing screen and sensitive surface that some photo-micrographers put thefocusing screen in the plate holder, focus the image and then put the sensitiveplate in the holder… … 3 Y-l d 55 <o o i <cc oo CC o I o H o 0. 6 <% cc ui Q > C DCDL > -J 0) Hio Q W o< -J< 5 Fig. 143. CH. VIIL] PHOTOMICROGRAPHY. 187 Fig. 143. Walmslefs Improved Photo-Mi crographic Camera, hi this figure isshoivH an excellent form ofphoto- micrograph ir camera for use with a…
Microscopy
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![An illustration from The Mason Machine Works, Taunton, Massachusetts, U.S.A., inventors and builders of cotton machinery : Founded 1842 ; Incorporated 1873 ; [Catalogue] (1898)](https://img.insideoutlibrary.com/img/200/ia-masonmachinework00maso-319-89.webp)
![An illustration from The Mason Machine Works, Taunton, Massachusetts, U.S.A., inventors and builders of cotton machinery : Founded 1842 ; Incorporated 1873 ; [Catalogue] (1898)](https://img.insideoutlibrary.com/img/200/ia-masonmachinework00maso-317-88.webp)
