Carpenter, William Benjamin, 1813-1885, Dallinger, W. H. (William Henry), 1842-1909 · Philadelphia, Blakiston · leaf 564
the existence of what he hasso long maintained. By using the new lens of the great aperture of 1*63, Dr. VanHeurck has produced some remarkable photo-micrographs, whichrather confirm these general inferences than present any newdata of knowledge concerning the diatoms. By his great courtesywe have… … Pleurosigma angulatum. Magnified 4900 diams.From a Photo-Micrograph by Dr. R. Zeiss takenwith the 2 m/m. Apochromatic Objective N. A. 1.30and projection eye-piece 4. Glassprint by Kuhl & Co., Frankfort on the Main. REPRODUCTION OF DIATOMS 523 in the earlier part of this treatise, giving…
Microscopy
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