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Scientific American, Vol. 29, No. 16 (1873) (1873)
leaf 7
cleanse it. The heat causes a sepa- When the cream is agitated for some time, or churned, the semi-solid particles of fat aggregate, and we have a mass of butter. The remaining fluid, termed buttermilk, contains pulley, to the shaft of the engine transmitting the power. tom. The material is well… … © 1873 SCIENTIFIC AMERICAN, INCInternet Archive · Public domain (published before 1931). Free to use for anything.
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