Carpenter, William Benjamin, 1813-1885 · Philadelphia : Blakiston · leaf 235
test when the distance between the Objective and theobject is increased, whilst depressions must appear brightest whenthat distance is diminished. — The Student should be warnedagainst supposing that, in all cases, the most positive and strikingappearance is the truest; for this is often not the… … False hexagonal areolation of Pleurosigmaangulatum, as seen in a Photograph magni-fied to 15,000 diameters. ERRORS OF INTERPRETATION. 181 .solution is allowed to evaporate on a glass slide, and, when quitedry, is covered with thin glass to keep it clean. The silica depositedin this way is curiously…
Microscopy · Biology
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