. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. 894 REPORT OF NATIONAL MUSEUM, 1904. knowledge regarding" glacial transportation, found difficulty in account- ing for the same. He recognized the similarity of the trains to the lateral glacial moraines described by Agassiz in his Etudes sur les Gla- ciers, which had appeared five years previously, but could not con- ceive of a glacier traveling directly across the intervening ridges, even were the mountains in the vicinity of suffici
. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. 894 REPORT OF NATIONAL MUSEUM, 1904. knowledge regarding" glacial transportation, found difficulty in account- ing for the same. He recognized the similarity of the trains to the lateral glacial moraines described by Agassiz in his Etudes sur les Gla- ciers, which had appeared five years previously, but could not con- ceive of a glacier traveling directly across the intervening ridges, even were the mountains in the vicinity of sufficient altitude to give rise to the same. Neither did the consideration of river drift or floating ice afford him a satisfactory conclusion. "In short, I find so many difficul- ties on an}^ supposition which I may make that I prefer to leave the case unexplained until more analogous facts have been ; Unsatisfactory and ap- parently unimportant as the paper may, at first thought, seem, it is men- tioned here on account of the extraordinary ex- planation .of the phe- nomenon offered hy the Rogers brothers three years later (see p. 403). In the American Jour- nal of Science for 1845 W. W. Mather, whose work in New York and Ohio has been already mentioned, published a paper on the physical geography of the United States in which' he still further elaborated some of the interesting and rather unique ideas regarding the origin M ., .. of the -secondary rocks and the elevation of islands, Mather on the J Physical Geology of continents, and mountain chains which he there put the United States, ' r_ ,84S- forth. These may be referred to in considerable detail. Mather again argued on the basis that the earth is a cooling body, contracting, and hence undergoing an increased velocity of rotation upon its axis. The oblateness of its spheroidal form, due to the increase of centrifugal force, would therefore induce a flow of water from the polar to the tropical regions, and as
Size: 1287px × 1941px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorsmithsonianinstitutio, bookcentury1800, bookdecade1840
