Carpenter, William Benjamin, 1813-1885, Dallinger, W. H. (William Henry), 1842-1909 · Philadelphia, Blakiston · leaf 322
to focus.The caoutchouc should be thin enough to afford no impediment tothe action of the fine adjustment, when it will be seen that it claspsthe object-glass by its elasticity at the aperture ; and the gentilepressure forces the under edge of the chamber upon the linen, sothat little or no air is… … 292 ACCESSORY APPARATUS A drawing of the apparatus in working order is given in perpen-dicular section at fig. 253. The parts a, a in this figure representthe glass stage corresponding to a, a, fig. 250 ; b in both figuresstands for the round aperture in the thick glass ; b, in fig. 253,…
Microscopy
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