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 140
passthrough them. IfJ now,we suppose a stratum likesand, pervious to water, tobe included as at a a, Fig121, between two otherstrata of clay or rock, thewater falling upon the un-covered margin of the sandy stratum a a, will be absorbed, and penetrate throughits whole depth. It will be prevented… … Fig. 122.
Physics · Science · Technology
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