The Hygiene of the School Child

how, because of these facts, methods of training should be modified. With a physical organism poorly developed one would expect an unsatisfactory mental condition, and one finds that "The conclusion, justified by the data, that physical superiority usually accompanies mental superiority, is of the greatest practical importance for education." The chapter on physiological age is certainly not the least important section. There is no doubt in the author's mind about the difficulty of the problem presented by the discrepancy between physiological and chronological age. Our treatment of the child has usually been accorded on the basis of the latter but