Carpenter, William Benjamin, 1813-1885, Dallinger, W. H. (William Henry), 1842-1909 · Philadelphia, Blakiston · leaf 121
or the left part of the objective. The manner in which the delineating pencils are transmittedthrough the system may be such as to require crossing over of therays from the right-hand half of the objective to the left eye-piece,and vice versa. But it is not essential to binocular effect. In… … Fig. 71 BINOCULAR MICROSCOPES 97 in the same plane, it will be necessary for the rays to cross ; but ifthey have been reflected an odd number of times, it is not only un-necessary, but is destructive of orthoscopic effect, provided ordinary-eye-pieces (non- erecting) are employed. Hence in the…
Microscopy
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