The Hard Palate in Normal and Feebleminded Individuals
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a theory which is still rather widely accepted. He declared that a certain peculiarly shaped palate, generally "Y-shaped," was pathognomonic of congenital idiocy. An able American dentist, Dr. Norman W. Kingsley, who was unable to agree with Dr. Down's conclusions, visited the asylum, and together with Dr. Down made a careful examination of every inmate. He found that "about two per cent might be said to be pronounced cases of narrowed or Y-shaped arches, and another five or ten
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