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 217
purifying the requisite gases, will, I think,be in strict conformity with the design of the present tract, andsuffice to render this part of the subject tolerably intelligible tothe generality of readers, It has been already noticed, that abottle, termed a purifier, is placed, for convenience sake… … these two bottles, taken from their respective situations, andnow supposed to be employed in the order they are exhibited.Some water and granulated zinc are first put into the leadengenerator, G, (about a pint of water and a pound of zinc willbe sufficient,) and the purifier, P, is about two-thirds…
Microscopy
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