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Scientific American, Vol. 54, No. 9 (1886) (1886)
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rocesses of manu- tions have some inclination. to the facture and the product, that it is horizon, aud the coristant change no exaggeration to say that the of thisinclination produces a series eyes of the entire industrial world (Continued on page 182.) are turned with envious admiration upon the… … THE USE OF NATURAL GAS AT PITTSBURG. © 1886 SCIENTIFIC AMERICAN, INCInternet Archive · Public domain (published before 1931). Free to use for anything.
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