There came to light last week a letter revealing one of the cruelest tricks one civilized being could well play upon another. It was a letter left by the late Professor Paul Kammerer, famed biologist, who ascended a small hill near Vienna last month and shot himself. For a year the scientific world had reverberated with Professor Kammerer's report that, by experiment upon frogs, he had proved to his immensely critical satisfaction that acquired characteristics, such as the loss of an arm, blotches on the skin, could be passed from one generation...
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