The industrial and artistic technology of paint and varnish (1917)
Sabin, Alvah Horton, 1851-1940 · New York, J. Wiley & Sons, Inc.; [etc., etc.] · leaf 494
461 CONCLUSION. D is of brass wire, woven to a brass ring which rests in the coni- cal upper extremity of the tube. The upper part of the furnace is filled with charcoal; the copal, in pieces not larger than a nut, on the wire net. The lower end of the tube C is immersed about i in. in water… … may contain oil, kept hot by setting the capsule on a plate of hot iron, in which case the melted resin \?ill be at once dissolved by the oil, which will also collect the products of distillation, or such parts as can be liquefied. The laboratory furnace, A B, is 17^ ins. in total height, the…
Paint · Varnish and varnishing
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