Carpenter, William Benjamin, 1813-1885 · London : John Churchill · leaf 339
ence of aspect which the different radial divisionspresent in Eig. 84, is simply due to tlie fact, that one set isout of focus, whilst the other is in it, since the appearances arereversed by merely altering the focal adjustment. The number ofradial divisions has been considered a character of…
Microscopy
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