Recent Geological Changes in Northern and Central Asia

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Abstract
There are so many points of resemblance between Northern and Eastern America and the corresponding areas of Asia that one would naturally expect to find that the Glacial history of the two evidence is abundant and unmistakable, that in post-Tertiary times Glacial ice extended along the Atlantic coast southward from Labrador and the Hudson-Bay region as far as New York City in lat. 40°, and in the Mississippi Valley to Carbondale in Southern Illinois, about lat. 38°. North of an irregular line connecting these points the whole country was, at a very recent period, covered with Glacial ice as deep as that which mantles Greenland at the present time. In all, about 4,000,000 square miles were brought under the direct influence of Glacial ice in America. Being familiar with nearly the whole of this North American field, and somewhat so with the glaciated portions of Europe, I set out, a little more than a year ago, in company with my son, Mr. Frederick B. Wright, to examine those portions of the Asiatic Continent which most nearly correspond in general superficial conditions to the glaciated portions of America. Sailing from San Francisco in February 1900, we spent six weeks in Japan, and satisfied ourselves that lofty as the mountains are, there have never been extensive glaciers among those on Nippon, the largest of the islands. From the verbal reports made to us by Prof. Jimbo, of the University of Tokyo, it seems equally clear that the more northern island of Yesso

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