Well's natural philosophy : for the use of schools, academies and privte students, introducing the latest results of scientific discovery and research ; arranged with special reference to the practical application of physical science to the arts and the experiences of everyday life ; with three hundred and seventy-five engravings (1873)
Wells, David A · New York : Ivison, Blakeman, Taylor and Co. · leaf 80
Fig. 47. Bow are theLaws of Pro-jectiles practi-ciilly appliedin military en-gineering ? … 7(5 WELLSS NATURAL PHILOSOPHY. upon a particular spot in the distance ; thus producing adesired effect without a wasteful expenditure of ammuni-tion. Fig. 48.
Physics · Science · Technology
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