Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 623
much stronger; the border-wax higher and broader in the spout, as you may perhaps have to pour off suddenly. Biting-in.—In biting-in the signal to pour off your acid is, when you perceive the ground breakingup,—that is, coming up in patches. During the biting-in the soft camel-hair pencil may be… … Aqua-tina engraving.—In this we have another variety of entertaining engraving; one, moreover,which, unlike the last, is still much practised by professional engravers. It forms the ground-work ofmany of the best modern prims, ael is generally resorted to where the object is to produce a plate,…
Mechanical engineering · Mechanics · Engineering
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