Annual report of the Board of Regents of the Smithsonian Institution . ch is the hope of suggesting newpoints of departure for others. In 1903 the Carnegie InstitKite of Washington appointed Huntington to assist Professor Davies of Harvard Univer-sity in the physiographic work of an expedition into Central results of this and of subsequent expeditions were embodied in anaccount published by Mr. Huntington in 1907.^ The great interestof his work lies in his presentment of the evidence concerning the rela-tions between the human race and its physical environment; of that Re
Annual report of the Board of Regents of the Smithsonian Institution . ch is the hope of suggesting newpoints of departure for others. In 1903 the Carnegie InstitKite of Washington appointed Huntington to assist Professor Davies of Harvard Univer-sity in the physiographic work of an expedition into Central results of this and of subsequent expeditions were embodied in anaccount published by Mr. Huntington in 1907.^ The great interestof his work lies in his presentment of the evidence concerning the rela-tions between the human race and its physical environment; of that Reprinted by permission from Antiquity, a quarterly review of Archseology, September, Pulse of Asia. 423 424 ANNUAL EEPORT SMITHSONIAN INSTITUTION, 1929 concerning the changes in that environment through changes of climateduring historic times; and in his treatment of the subject of the effectsof these changes on its history. Briefly stated his main argument is that there is evidence of therecurrence of changes of cHmate in Central Asia during historic times,. and that some measure of these changes is furnished by the variationsin the level of the Caspian Sea. The evidence as to the variations inthe climatic conditions of other places in Asia confirms that concerningthe variations in the level of the Caspian. He maintains that, while CLIMATE AND MIGRATION CUEEY 425 many of the facts might be explained in individual cases by othertheories than that of a simultaneous change of climate over a wide areano other theory explains all the facts. A comparison of physiographic,historical and archeological data from Russian Turkestan, ChineseTurkestan, Persia, Seistan, Baluchistan and from the area draininginto the Caspian Sea shows that all lines of evidence agree in provingthat pulsations of climate, corresponding in time and character, havebeen common to all these countries. The lakes and rivers throughoutthe whole of this region have waxed and waned simultaneously^ morethan onc
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