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Scientific American, Vol. 81, No. 12 (1899) (1899)
leaf 7
verse arms, from which AMERICAN of January 30, 1897.) In thelatter system four distance rods lead down to connect with the corre- guides which are pitched at an angle to the shaft, one the air is allowed to pass freely through the hot water above and one below it, and have a motion parallel to… … © 1899 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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