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Scientific American, Vol. 29, No. 15 (1873) (1873)

leaf 9

An illustration from Scientific American, Vol. 29, No. 15 (1873), 1873, leaf 9
ed to the local manufactures and indus- sary to adhere to theold method of expensive woolen “ trav- it is evident that the air currents, established along the sew. tries of our sister city ; while in New York is in successful ellers” when using aniline black. er by the rotation of the fans, will… … wa EST a lator is arranged so that the draft can be governed and light not be paring a piece 164 feet in length is, in Germany, excluded. The device consists of four wings,two of glass and two of wire about 4 cents. For light patterns, like shirtings, it can be emanate from the sewage. Thus the…

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