Saddle Boiler

“The saddle boiler is a very efficient form, steady and sure in its working. in its improved forms it is, perhaps, the best for general purposes. It should be set over a furnace, the sides and end of which should be of fire-brick. It may be quite plain, or with the inner surface ribbed or corrugated, a modification adopted by Mr. Gray of Chelsea.” — Encyclopedia Britannica, 1893

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