The microscope; an introduction to microscopic methods and to histology (1901)
Gage, Simon Henry, 1851-1944 · Ithaca, N.Y. Comstock publishing company · leaf 39
uroscopique.Ger. Stauroskop-Okular. An ocular with a Bertrands quartz plate for mineralog-ical purposes.— Working Ocular; Fr. Oculaire de travail; Ger. Arbeits-Okular,see I 39. \ 38. Huygenian Ocular —A negative ocular designed by Huygens for thetelescope, but adapted also to the microscope. It is… … Fig. 31. Compensating Oculars of Zeiss, with section removed to show the con-struction. The line A-A is at the level of the upper end of the tube of the micro-scope while B-B represents the lower focal points. It will be seen that the mount-ing is so arranged that the lower focal points in all are…
Microscopy
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