The microscope : its construction and management : including technique, photo-micrography, and the past and future of the microscope (1893)
Heurck, Henri van, 1838-1909 · London : C. Lockwood ; New York : D. Van Nostrand Co. · leaf 125
rs differ, although they finally pro-duce equal magnification;the second is calculatedso as to compensate forthe longer path which theuminous pencil strikingit, has to traverse beforereaching the eye. The second ocular canalso be so adjusted thatthe distance betweenthe two oculars suitsthe… … Fig. 97. COMPARING OCULAk. I°5 tained, which is useful in many cases, and which some people find lessfatiguing than monocular vision. The apparatus can be used with any objective. The loss of lightcaused by the prisms is insignificant. 9. Dr. H. Van Heurcks Comparing Ocular.—To scrupulouslycompare…
Microscopy
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