. Some salient points in the science of the earth [microform]. Geology; Paleontology; Géologie; Paléontologie. «v. it! Iff rf it#ki â 1 *,. ; i 41 ji ^ ; i ! 1 1 1 39^ CAUSES OF CLIMATAL CHANGE becomes increasingly unsatisfactory as the phenomena are developed into fuller ap{)reciation. The more we consider the asymmetry of the ice disti'bution in latitude and longitude, and its disparity in elevation, the more difficult it becomes to explain the phenomena upon any astronomical basis. If we were at liberty to disregard the considerations forced upon us by physicists and astronomers, and per
. Some salient points in the science of the earth [microform]. Geology; Paleontology; Géologie; Paléontologie. «v. it! Iff rf it#ki â 1 *,. ; i 41 ji ^ ; i ! 1 1 1 39^ CAUSES OF CLIMATAL CHANGE becomes increasingly unsatisfactory as the phenomena are developed into fuller ap{)reciation. The more we consider the asymmetry of the ice disti'bution in latitude and longitude, and its disparity in elevation, the more difficult it becomes to explain the phenomena upon any astronomical basis. If we were at liberty to disregard the considerations forced upon us by physicists and astronomers, and permit ourselves simi)ly to follow freely the apparent leadings of the phenomena, it appears at this hour as though we should be led upon an old and forbidden trail,â the hypothesis of a wandering pole. It is admitted that there is a z'era causa in elevations and de- pressions of the earth's crust, but it is held inadequate. It is admitted that the apparent changes of latitude shown by the determinations of European and American observatories are remarkable, but their trustworthiness is challenged. Were there no barriers against free hypotheses in this direction, glaciul phenomena could apparently find adequate explanation ; but debarredâas we doubtless should consider ourselves to be at presentâfrom this resource, our hypotheses remain inharmonious with the fticts, and the riddle remains ; It should be observed here that the unsolved "riddle" is that of a continental ice sheet. This, as we have already seen, is probably insoluble in any way, but fortunately needs no solution, being merely imaginary. If we adopt a moderate view as to the actual conditions of the Pleistocene, the geo- graphical theory will be found quite sufficient to accourit for the facts. I,et it be observed here also, in connection with the above thoughtful and frank avowal of one of the ablest of American glacialists, that the geographical theory provides for that " asymm
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Keywords: ., boo, bookcentury1800, booksubjectgeology, booksubjectpaleontology
