Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 807
n the raw silk from the gum which it holds in its natural state ; and to free itfrom knots and imperfections. . The thread as produced bv the worm is composed of two filaments, which are spun simultaneouslyand cemented together. When wound into the cocoon the coils mutually cohere to each other,… … to form a thread. In this state itIS the raw silk of commerce, andis exported to the United Statesfrom China, Japan, and Italy,made up into hanks or bundles.The length of each filament isusually about 300 yards. Of av-erage cocoons, 250 weigh abouta pound, and 12 lbs. of cocoonsyield a pound of…
Mechanical engineering -- Dictionaries
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