Scientific American, Vol. 29, No. 21 (November 1873)
An issue of the weekly American technical journal Scientific American, published by Munn & Co. in New York in November 1873 for inventors, engineers and manufacturers. The wood engravings show patented machines and fittings — a vertical boiler with valve gear, a turbine-like casting, a sectioned washstand and plumbing trap, and lettered figure plates of iron brackets and clamps.
