It should be emphasized, finally, that the addition to such a diet as is ordinarily observed in the Orient to produce beri-beri, of some article of food which will prevent the development of beri-beri, will in many instances not go far toward correcting inorganic faults. From the standpoint of public health, therefore, it is by no means sufficient to prevent beri-beri in those countries where it occurs. This may be effectually accomplished, and yet the population may still be inefficient physically, and suffer from high infant mortality because of the poor quality of the mother's milk, and the adult members of the population may still early develop signs of senility. These statements are made on the basis of the assumption that the same physiological limitations with respect to nutrition, which apply to animals apply with equal force to man, and that these run parallel when the comparison of an animal with a man on the same diet is made on experiments covering equivalent fractions of the average span of life of which each is capable.