Carpenter, William Benjamin, 1813-1885 · Philadelphia : Blakiston · leaf 259
t Photographs of this Diatom,under powers of 1500 and 1650 diameters, has found that the striaeon the largest valves were never more than 91 in l-1000th of an inch,while those on the smallest never exceeded 100 in the l-1000th inch.*The resolution of the lines on this test may be made withoutmuch… … k
Microscopy · Biology
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