A difference in the physical strength of the sexes is found in some degree throughout the world, but it would appear to be far more marked in civilized than in savage communities. Compare the records at the Vassar field-games with that of the men in any leading college: in the hundred-yard dash, fifteen seconds as against ten and a fraction; in the high jump, forty-eight inches as against six feet and over. The muscular force of American college women as tested in the Yale and the Oberlin gymnasiums is but one third that of men, that is, taking all the students, the weaklings and the little men along with the athletes, and the women large and small. As to strength of back the average for men is 154 kilograms, for women 54 kilograms; legs, average for men 186, average for women 76.5; right forearm, average for men 56, average for women 21.4. This is an abnormal difference. The natural and possible strength is more nearly attained by men than by women under our social conditions. Women escape the physical toil which strengthens, but not the mental strain which kills. Men carry more of the wood, but the women not less of the worries. A fairer test is applied among peasants in field-work in France and Germany, where the strength of women is found to be about two thirds that of men. American women should do and will do more to attain their natural strength when we attain sounder ideas of education and saner modes of living. [Sidenote: Talent and training as factors of efficiency]