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Scientific American, Vol. 60, No. 18 (1889) (1889)
leaf 8
g, being both duc- serves as a pattern for the interior of the furnace. tile and malleable. The upper portion of the raised bottom is filled in with of the covering and the tacks. ; The rubber disks are stretched over the circular The work is heated gradually until the water of crys- plaster of… … © 1889 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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