Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 756
These retorts are considerably more expensive in the first instance than those in general use, but inthe end they would be found cheaper. Indeed, the entire arrangement is one of great economy, and byfar the most scientific process yet adopted for making coal-gas; it requires no attendance, except…
Mechanical engineering · Mechanics · Engineering
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