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Scientific American, Vol. 5, No. 19 (1861) (1861)
leaf 7
Horace W. Ball, at the same place. cession at an elevation of 2° 30’. Thetarget was 15 by guns have close barrels 7 and 18 calibers long. It Messrs. Ball, Black & Co., have completed the is claimed that in 14 calibers’ length of close barrel 20 feet ; the distance, as near as we could measure by… … legs of the other leaf; con- this city, and it is certainly necting the two leaves to- @ very ingenious, and, we should presume, will prove a very effective war en- gine. be brought into.'s. flat plate, ag shown in Fig. 2. Tug catalogue of the library of the British Museum fills 300 volumes, © 1861…Internet Archive · Public domain (published before 1931). Free to use for anything.
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