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Scientific American, Vol. 4, No. 17 (January 13, 1849) (1849)

leaf 7

An illustration from Scientific American, Vol. 4, No. 17 (January 13, 1849), 1849, leaf 7
. The arms may then the salt by heat; when the sulphate of lead re- perfect combination of the colors with the fa- liquor, and filter without washing, and then be made fast on the spindles and the engines mains which should be well washed and dried bric is thus effected. lay past in a damp place.… … out of that line asthe length of one of the keep damp. arms H and I taken from the centre of the PreciPiTaTE or CocHinEAL.—Boil twenty spindle to the centre of its friction wheel and five parts of cochineal, strain it and add gra- set such a distance from the fly as to admit of dually, stirring, 6…

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