Carpenter, William Benjamin, 1813-1885 · Philadelphia : Blakiston · leaf 409
ulphide of carbon, or in the phosphorus solution,they would be converted into convex lenses of the more refrac-tive substance, and have their action in air reversed. Analogousbut opposite changes must take place, when convex Diatom-lensesare viewed first in air, and then in the more refractive…
Microscopy · Biology
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