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Scientific American, Vol. 73, No. 20 (1895) (1895)
leaf 4
ncision ment shown in No.1 of Fig. 1, incisions 12 mm. in made in certain resinous trees (such as the lac of China times it consists of pieces that have fallen from the |branch and been earefully collected. ‘‘Shellac” re- width are made in a horizontal direction in the bark, and Japan). sults from… … Fig. 4 PURIFICATION OF TAC. © 1895 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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