The steam engine familiarly explained and illustrated; with an historical sketch of its invention and progressive improvement; (1836)
Lardner, Dionysius, 1793-1859, Renwick, James, 1790-1863. [from old catalog] · Philadelphia, E. L. Carey & A. Hart · leaf 207
ed oftwo casings of iron, one contained within the other, havingbetween them a space about 3 inches in breadth ; the mag-nitude of the box being 3 feet in length, 2 feet in width, and3 feet in depth. The casing which surrounds the box com-municates with the lower part of the boiler by a pipe… … flows freely through the pipe c, into the casing-which sur-rounds the furnace or fire-box, and fills this casing to thesame level as that which it has in the boiler. When the en-gine is at work, the boiler is kept about half filled with wa-ter; and, consequently, the casing surrounding the…
Steam-engines
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![An illustration from Io. Bap. Portae Neopolitani de distillatione lib. IX : quibus certa methodo, multipliciq[ue] artificio, penitioribus naturae arcanis detectis, cuius libet mixti in propria elementa resolutio, perfectè docetur (1608)](https://img.insideoutlibrary.com/img/200/ia-iobapportaeneopo00port-45-36.webp)
