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| 0396 |
Explorations in Turkestan : Expedition of 1904 : vol.1 |
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we may know exactly how, when, and why the limits of cultivation expanded and con-
tracted. In general, however, it appears that the history of the rise and fall of successive
phases of civilization in Merv corresponds to what would be expected in view of the theory
of climatic changes outlined above. A fuller study of the region will afford one of the best
possible tests of the theory. The matter is referred to here thus briefly in order to explain
why it is that the writer, having advanced a climatic theory in explanation of certain great
historic events, such as the barbarian invasion of Europe in the Dark Ages, here publishes
a chapter upon one of the most critical regions to be found anywhere in the world, and
devotes only a page or two to the most elementary phases of the question. The chapter
is one of the steps which led to the theory, and therefore takes up only the rudiments
of the subject.
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