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Scientific American, Vol. 80, No. 8 (February 1899) (1899)

leaf 10

An illustration from Scientific American, Vol. 80, No. 8 (February 1899), 1899, leaf 10
^txtntiiit %mtxum* February 25, 1899.] 123 … The first kite is a large one, each mile of length and THE BLUE HILL OBSEBVATOBY—BEOINNING OF AN ASCENT. having at least 70 sqnnre breaks at 300 pounds strain. It is usually woiked at less than half its of the group of recording instruments carried by the | feet of lifting surface, and when ir has…

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