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Scientific American, Vol. 37, No. 17 (1877) (1877)

leaf 7

An illustration from Scientific American, Vol. 37, No. 17 (1877), 1877, leaf 7
popularizing astronomical knowledge chair round, the chair may be placed at an open window, through the medium of a simple monument which may be a hole 5 inches in diameter, so as to leave but 1} inches of and an attempt to move it will ring the bell. Farmers can set up in public squares, private… … than a petroleum flame. The solstices and equinoxes being observed, and the succession individual parts of flames which show a considerable of seasons noted. The equa- difference as to total intensity differ but little with regard tor, divided into degrees and receiving the shadow of the head…

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