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Scientific American, Vol. 26, No. 1 (1872) (1872)

leaf 2

An illustration from Scientific American, Vol. 26, No. 1 (1872), 1872, leaf 2
ons formed, and a large and profitable business inaugurated. The human excreta, will become comparatively harmless, while having hollow water spaces between which the heated gases company employs a large number of drays and men, who go their contents will then be allowed to run into the rivers of… … rivalled. When it is considered that this is the progress made in the usual manner. A large amount of heating surface is in the course of one year, it will appear that the process must substituting fresh ones, a work of only a minute in each case, thus secured in small space, a matter of much…

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