. Bulletin - United States National Museum. Science. U. S. NATIONAL MUSEUM BULLETIN 173 PLATE 10. d ^I^^^Kv 4 ^m â â ^H^H ''If' 1 2 Early steam Engines. ^ 1. Heron's turbine, c. 150 A. D. (model; no. 308462). See p. 26. 2. Watt pumping engine, "Old Bess," 1777 (model; I'. no. .i08469). See p. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States National Museum; Smithsonian Institution;

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. Bulletin - United States National Museum. Science. U. S. NATIONAL MUSEUM BULLETIN 173 PLATE 10. d ^I^^^Kv 4 ^m â â ^H^H ''If' 1 2 Early steam Engines. ^ 1. Heron's turbine, c. 150 A. D. (model; no. 308462). See p. 26. 2. Watt pumping engine, "Old Bess," 1777 (model; I'. no. .i08469). See p. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.

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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience