Subject ASC0003jyl
Journal of the Royal Microscopical Society.
1888:pt.1:no.1-3 (1888), Page 111 (1878-1968.)
New York Botanical Garden, LuEsther T. Mertz Library
BHL Page 31221816
Keywords
microscope disc zeiss iris diaphragm aperture circle circular hole plate Zeiss metal Iris internal mechanism second disc rotation illumination plates spinning magnify eye hole.