A practical treatise on the use of the microscope, including the different methods of preparing and examining animal, vegetable, and mineral structures (1848)
Quekett, John, 1815-1861 · London, H. Bailliere · leaf 45
ed a convexspeculum. When the ring was taken upcarefully and laid on the margin of thecylinder B, the mercury sank downand formed a concave reflecting speculum.The cylinder B is supported by a pillar,which is attached to the foot D, C C, F, G,represents a stage, which is capable of being-raised or… … THE MICROSCOPE. 11 making of lenses of water let fall on pieces of plane glass,which form themselves into planoconvex lenses: he foundthat they magnified greatly, but as the fluidity of the waterobliged him to keep the glass horizontal, he was led to tryisinglass dissolved in hot water, whereby the…
Microscopy
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