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 159
ith the naked eye, if they arelarge, or with a pocket magnifier or the watchmakers lens,described at page 50; if they are small, either of the glasstubes, having one end previously closed by the thumb or fore-finger wetted for the purpose, is introduced into the phial inthe manner represented by… … Fig. 75. removed and as quickly replaced: the moment the finger istaken off, the atmospheric pressure will force the water, andwith it, in all probability, the desired objects up the tube;when the finger has been replaced, the tube containing thefluid may be withdrawn from the phial, and as the…
Microscopy
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