Rain, rain, go away,
Come again some other day.
No President, meteorologically wise, would ever murmur these words to the heavens. For it is rain that keeps a President and his party in power; drought forebodes political upheaval.
Such was the phenomenon brought to light by one Robert Marshall, tree experimenter of Missoula, Mont. In the Nation, he wrote: observed a peculiar biological-political relationship in the annual rings of the trees. Three marked periods of retarded growth were manifest, just prior to 1828, 1884 and 1912. These were the...
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