Further, the practice of such economy led to marked improvement in the working of the neuro-muscular machinery, sufficiently noticeable to attract the attention of the men themselves, apart from the records of the dynamometer, etc. Indeed, it has been the universal feeling among all the subjects of experiment that they were less conscious of fatigue than formerly, or that they could do more work without the feeling of fatigue that is usually so conspicuous after heavy work, or long-continued muscular strain. We thus have for consideration an added factor, viz., the possible improvement of the physical condition of the body under a lowered proteid intake. This question, however, we shall discuss more fully later on. It is enough for the present to simply emphasize the fact that with a greatly diminished proteid metabolism the body suffers no harm, the muscular machinery is as well able to perform its work as usual, and consequently there would seem to be no adequate reason why our daily dietary should be cumbered with such quantities of proteid matter as are generally considered necessary for health and strength. There is one point of great importance in this connection that should not be overlooked, viz., whether the power of resistance toward disease is diminished in any way by a continued low proteid intake. This is surely a proper question, and one that must be carefully considered. Fortunately or unfortunately, we have no facts at our disposal. We have the belief, however, engendered by the results so far obtained, that there is no good ground for assuming the body to be any more susceptible to disease under conditions of low proteid metabolism than when supplied with an excess of proteid food. Indeed, it has been somewhat remarkable how free from all troubles—even during a very trying winter—the subjects of this experiment have been. We believe that economy in the use of proteid food, curtailment of proteid metabolism to a degree commensurate with the real needs of the body, will prove helpful to health, but we have no convincing facts to present,—only the simple statement that all the men have been well and remarkably free from colds and other minor ailments all through the experiment.