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Scientific American, Vol. 28, No. 13 (March 1873) (1873)

leaf 4

An illustration from Scientific American, Vol. 28, No. 13 (March 1873), 1873, leaf 4
in the civilized world were made to connect make known the results, it might be of much benefit to many, who would expect that a boiler nearly 20 years of age, with the pond and the sea, and perhaps lessen the number of boiler explosions. I in- no steam gage upon it, would indicate pressure to the… … —-i»i m The dimensions I give are, of course, not arbitrary ; a ma- Psychic Force on tbe Slate. necting arm is6 inches long. The arms, D and E, are, 2 inch- chine of much larger dimensions would reduce the friction es long, and E is stationary at F, on the bed plate, H, and D To the Editor of the…

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