Carpenter, William Benjamin, 1813-1885 · Philadelphia : Blakiston · leaf 394
Portions of Valve of Pleurcsigma angulatiim, as seen under a magnifying*power of 2,000 diameters, with central illumination; from a Photograph, byCarl Gunther in the possession of the Eoyal Microscopical Society. A. Normal hexagonal areolation; areolae bright circles, surrounded by darkhexagons. B.…
Microscopy · Biology
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