Undoubtedly, the rate of proteid metabolism for these men could have been lowered considerably beyond the present level by increasing largely the intake of carbohydrates and fats, but it has been the intent throughout all of these experiments to learn the minimal proteid requirement under conditions precluding the use of any excess of non-nitrogenous foods; also, to study the effect of a general physiological economy in nutrition, with a view to ascertaining the real necessities of the body for both proteid and non-proteid foods with maintenance of bodily strength and vigor. Hence, we may again emphasize the fact that the low proteid metabolism maintained by all these men throughout the period of the experiment, with establishment of nitrogenous equilibrium on a consumption of proteid or albuminous food averaging one-half the amount ordinarily specified as the daily requirement of the healthy man, has been accomplished with even less total food—fats and carbohydrates—than the ordinary standards call for, _i. e._, considerably less than 3000 calories per day in fuel value. OAKMAN. _Monday, March 28, 1904._ Breakfast.—Fried rice 150 grams, syrup 75 grams, baked potato 250 grams, butter 20 grams, one cup coffee 350 grams. Dinner.—Thick pea soup 200 grams, boiled onions 100 grams, boiled sweet potato 250 grams, bread 50 grams, mashed potato 200 grams, butter 20 grams, one cup coffee 350 grams. Supper.—Sliced banana 150 grams, biscuit 125 grams, fried bacon 20 grams, French fried potato 200 grams, butter 25 grams, one cup tea 350 grams. Food. Grams. Per cent Nitrogen. Total Nitrogen. Fried rice 150 × 0.40 = 0.600 grams. Syrup 75 × 0.051 = 0.038 Baked potato 250 × 0.33 = 0.825 Butter 25 + 20 + 20 = 65 × 0.15 = 0.097 Coffee (breakfast) 350 × 0.10 = 0.350 Pea soup 200 × 0.50 = 1.000 Boiled onion 100 × 0.30 = 0.300 Sweet potato 250 × 0.12 = 0.300 Bread 50 × 1.57 = 0.785 Mashed potato 200 × 0.30 = 0.600 Coffee (dinner) 350 × 0.075 = 0.262 Banana 150 × 0.27 = 0.405 Biscuit 125 × 1.21 = 1.513 Bacon 20 × 3.85 = 0.770 Fried potato 200 × 0.46 = 0.920 Tea 350 × 0.075 = 0.262 ------ Total nitrogen in food 9.027 grams. Total nitrogen in urine 6.640 Fuel value of the food 2935 calories. _Tuesday, March 29, 1904._