Indeed, so far as could be determined on the basis of chemical composition, the heat value of the food was quite a little less than this figure would imply. If the relatively small amount of proteid food made use of in this trial was inadequate for the real necessities of the body, some indication of it would be expected to reveal itself, with at least some of the men, by the end of the period. One criticism frequently made is that the subject draws in some measure upon his store of body material. Should this be the case, it is evident that body-weight--in such a long experiment as this--will gradually but surely diminish. Further, the subject will show a minus nitrogen balance, _i. e._, there will be a constant tendency for the body to give off more nitrogen than it takes in. As bearing on the first point, the following table showing the body-weights of the men at the commencement of the experiment in October, and at the close of the experiment in April will be of interest: TABLE OF BODY-WEIGHTS +-------------+----------------+----------------+ | | October, 1903 | April, 1904 | +-------------+----------------+----------------+ | | kilos | kilos | | Steltz | 52.3 | 53.0 | | Zooman | 54.0 | 55.0 | | Coffman | 59.1 | 58.0 | | Morris | 59.2 | 59.0 | | Broyles | 59.4 | 61.0 | | Loewenthal | 60.1 | 59.0 | | Sliney | 61.3 | 60.6 | | Cohn | 65.0 | 62.6 | | Oakman | 66.7 | 62.1 | | Henderson | 71.3 | 71.0 | | Fritz | 76.0 | 72.6 | | Bates | 72.7 | 64.3 (Feb.) | | Davis | 59.3 | 57.2 (Jan.) | +-------------+----------------+----------------+ As is readily seen, five of the men practically retained their weight or made a slight gain. Of the others, Coffman, Loewenthal, Sliney, and Cohn lost somewhat, but the amount was very small. Further, the loss occurred during the first few weeks of the experiment, after which their weight remained practically stationary. Fritz and Oakman lost weight somewhat more noticeably, but this loss likewise occurred during the earlier part of the trial. The accompanying photographs of Fritz, taken at the close of the experiment, show plainly that such loss of weight as he suffered did not detract from the appearance of his well-developed musculature. Certainly, the photographs do not show any signs of nitrogen starvation, or suggest the lack of any kind of food.