Micrographia : containing practical essays on reflecting, solar, oxy-hydrogen gas microscopes; micrometers; eye-pieces, &c. &c. (1837)
Goring, C. R., 1792-1840, Pritchard, Andrew, 1804-1882, joint author · London : Whitaker and Co. · leaf 211
rm * Tt will be found in practice much better to employ only one funneland stop-cock to the tank, T, and make the pipe, P, branch oft to eachvessel: I have recently learnt that Mr. Maugham has proposed the latterplan, but in place of the tank, T, he uses a ball-cock to regulate the supplyof water.… … the lime is disposed for combustion: o and h represent thefeeding-pipes of the jet, which are to be attached to the corre-sponding tubes of the vessels O and H, designated by the sameletters. At S are situated two of Hemmings safety-tubes,containing bundles of fine copper wire, gauze, or asbestos,…
Microscopy
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