Breakfast.—Boiled Indian-meal 125 grams, milk 125 grams, sugar 30 grams, butter 10 grams, bread 30 grams, one cup coffee 350 grams. Dinner.—Bean soup (thick) 200 grams, bread 75 grams, mashed potato 100 grams, pickles 25 grams, one cup coffee 350 grams, custard pie 105 grams. Supper.—Crackers 50 grams, butter 15 grams, stewed prunes 125 grams, sponge cake 100 grams, one cup tea 350 grams. Food. Grams. Per cent Nitrogen. Total Nitrogen. Boiled Indian-meal 125 × 0.24 = 0.300 grams. Milk 125 × 0.50 = 0.625 Sugar 30 × 0.00 = 0.000 Butter (breakfast) 10 × 0.10 = 0.010 Bread (breakfast) 30 × 1.61 = 0.483 Coffee (breakfast) 350 × 0.087 = 0.304 Bean soup 200 × 0.86 = 1.720 Bread (dinner) 75 × 1.61 = 1.207 Mashed potato 100 × 0.28 = 0.280 Pickles 25 × 0.054 = 0.013 Coffee (dinner) 350 × 0.081 = 0.283 Custard pie 105 × 0.88 = 0.924 Crackers 50 × 1.61 = 0.805 Butter (supper) 15 × 0.10 = 0.015 Stewed prunes 125 × 0.17 = 0.212 Sponge cake 100 × 1.00 = 1.000 Tea 350 × 0.048 = 0.168 ------ Total nitrogen in food 8.349 grams. Total nitrogen in urine 8.140 Fuel value of the food 2081 calories. NITROGEN BALANCE.—_Oakman._ Nitrogen Output. Taken in. Nitrogen in Urine. Weight of Fæces (dry). Jan. 12 7.793 grams. 6.00 grams. 13 9.992 7.33 14 7.412 8.29 5.0 grams. 15 8.560 7.14 76.0 16 7.282 8.23 13.5 17 8.349 8.14 9.5 ------ ------ ------ 104.0 grams contain 7.39% N. 49.388 45.13 + 7.685 grams nitrogen. ------ ---------------------- 49.388 grams nitrogen. 52.815 grams nitrogen. Nitrogen balance for six days = -3.427 grams. Nitrogen balance per day = -0.571 gram. Average Intake. Calories per day 2078. Nitrogen per day 8.23 grams. NITROGEN BALANCE.—_Loewenthal._ Nitrogen Output. Taken in. Nitrogen in Urine. Weight of Fæces (dry).