Science: The Dinner Bell

Another brick in the pile of evidence that is gradually being built up by Kammerer, Guyer and others in favor of the theory of " inheritance of acquired characteristics" (TIME, May 12) has been laid by Professor Ivan P. Pavloff, great Russian physiologist, who visited America last Summer (TIME, July 23). In an address given at the Battle Creek Sanitarium and published in Science last week, he described his latest researches on "conditioned reflexes " in animals.

Dr. Pavloff's newest experiments, not yet completed, are on white mice. The rodents were trained to...

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