Handbook of practical botany for the botanical laboratory and private student (1908)
Strasburger, Eduard, 1844-1912, Hillhouse, William, 1850-1910 · London, S. Sonnenschein; New York, Macmillan · leaf 79
itcan always be kept on the instrument, the prism-sheath beingturned out of the way; and with some practice will perform yeo-mans service. It consists of two prisms, inclined to one another,in a common setting. The rays (s) coming from the pencil take,after double reflection inside the prisms, a… … Fig. 16.—Two-prism Drawing Camera by Zeiss ; three-quarters natural size. anterior edge, visible through the opening in the setting, approxi-mately bisects the pupil of the emerging rays of the micro-scope, i.e., the bright circular disk which we notice when we lookperpendicularly into the…
Botany · Plant physiology · Microscopy
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