Quaker oats 150.0 × 0.46 = 0.690 grams. Bread 42.5 + 87.3 + 51.5 = 181.3 × 1.75 = 3.172 Coffee 210.0 × 0.11 = 0.231 Sugar 31 + 21 = 52.0 × 0.00 = 0.000 Banana 88.2 × 0.20 = 0.176 Cream 87.6 × 0.50 = 0.438 Butter 28.7 + 12.2 = 40.9 × 0.088 = 0.035 Potato 210.0 × 0.41 = 0.861 Apple sauce 116.5 × 0.029 = 0.033 Potato 150.0 × 0.37 = 0.555 Succotash 100.0 × 0.57 = 0.570 Chocolate cake 122.5 × 0.75 = 0.918 Vanilla ice 110.7 × 0.58 = 0.642 ------ Total nitrogen in food 8.321 grams. Total nitrogen in urine 8.330 Fuel value of the food 2635 calories. NITROGEN BALANCE.—_Dean._ Nitrogen Output. Taken in. Nitrogen in Urine. Weight of Fæces (dry). Feb. 9 7.883 grams. 8.64 grams. 10 8.087 8.29 11 10.102 8.55 18 grams. 12 10.436 9.93 18 13 8.170 8.87 80 14 8.321 8.33 58 ------ ------ ------ 174 grams contain 4.90% N. 52.999 52.61 + 8.52 grams nitrogen. ------ ---------------------- 52.999 grams nitrogen. 61.13 grams nitrogen. Nitrogen balance for six days = -8.131 grams. Nitrogen balance per day = -1.355 grams. Average Intake. Calories per day 2529. Nitrogen per day 8.83 grams. * * * * * Mr. George M. Beers, Clerk in the Treasurer’s office of the Sheffield Scientific School, became a subject of study in January, 1903. Mr. Beers was thirty-eight years of age, and had always enjoyed fairly good health, although of somewhat frail physique. His occupation has always been indoor work as accountant, etc. His body-weight was 61 kilos.