Subject ASC0003jqq
Journal of the Royal Microscopical Society.
ser.2:v.6:pt.1:no.1-3 (1886), Page 334 (1878-1968.)
New York Botanical Garden, LuEsther T. Mertz Library
BHL Page 31216509
Keywords
Lens glass hemisphere rays lens one-seventh maximum value aperture enlarged diminish immersion liquid high refractive index ratio of index