Medicine: Twin Brother Act

Educator John Dewey stared, smiled and applauded. Neurologist Stewart Paton stared, smiled and applauded. Geneticist Charles Benedict Davenport stared, smiled and applauded. Likewise did four dozen other specially invited guests at the performances of a 19-month old boy known as Johnny. They watched the youngster critically as he climbed up a steep plank to get a banana, as he dropped down from a 5-ft. perch (see cut, p. 18), as he got around on roller skates, as he picked out familiar objects from a pile of hells, pencils, spoons and other miscellany—all the while...

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