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Scientific American, Vol. 52, No. 5 (1885) (1885)

leaf 4

An illustration from Scientific American, Vol. 52, No. 5 (1885), 1885, leaf 4
ss that may be idea of the compactness of the pump may be gained the bubble when the level is perfectly horizontal, thus growing near. Attached to the beams, A, of an ordi- when it is stated that the floor space occupied is only 6 facilitating the taking of true levels. If two inclined nary… … fumigations up to a marked pungency in the six hours ELCE’S COMBINED GUARD AND WEEDER, TYLER’S SPIRIT LEVEL. being required. It was also found that one good fumi- gation with chlorine neutralized effectually the virus which is about 8 inches high and of any suitable length, is placed on one of…

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