Fuel value of the food 1533 calories. _Monday, June 27, 1904._ Breakfast.—Coffee 112 grams, cream 22 grams, sugar 10 grams. Lunch.—Roast lamb 9 grams, baked potato 90 grams, wheat gems 47 grams, butter 12 grams, sugar 25 grams, iced tea 250 grams, vanilla éclair 47 grams. Dinner.—Lamb chop 32 grams, asparagus 49 grams, butter 17 grams, creamed potato 107 grams, bread 35 grams, lettuce-orange salad with mayonnaise dressing 150 grams, cream cheese 12 grams, crackers 21 grams, coffee 63 grams, sugar 9 grams. Food. Grams. Per cent Nitrogen. Total Nitrogen. Coffee 123 + 53 = 176 × 0.045 = 0.079 gram. Cream 22 × 0.32 = 0.070 Sugar 10 + 25 + 9 = 44 × 0.00 = 0.000 Iced tea 250 × 0.018 = 0.045 Baked potato 90 × 0.25 = 0.225 Wheat gems 47 × 1.65 = 0.776 Butter 12 + 17 = 29 × 0.13 = 0.038 Roast lamb 9 × 4.28 = 0.385 Vanilla éclair 47 × 0.85 = 0.400 Lamb chops 32 × 4.57 = 1.462 Asparagus 49 × 0.59 = 0.289 Creamed potato 107 × 0.40 = 0.428 Bread 35 × 1.33 = 0.466 Lettuce-orange salad, etc. 150 × 0.23 = 0.345 Cream cheese 12 × 1.62 = 0.194 Crackers 21 × 1.35 = 0.284 ------ Total nitrogen in food 5.486 grams. Total nitrogen in urine 4.980 Fuel value of the food 1454 calories. NITROGEN BALANCE.—_Chittenden._ Nitrogen Output. Taken in. Nitrogen in Urine. Weight of Fæces (dry). June 23 6.622 grams. 5.26 grams. 10.6 grams. 24 6.331 5.30 0.7 25 4.941 4.43 14.2 26 5.922 4.66 11.9 27 5.486 4.98 15.2 ------ ------ ------ 82.6 grams contain 6.08% N. 29.302 24.63 + 5.022 grams nitrogen. ------ ---------------------- 29.302 grams nitrogen. 29.652 grams nitrogen. Nitrogen balance for five days = -0.350 gram. Nitrogen balance per day = -0.070 gram. Average Intake. Calories per day 1549. Nitrogen per day 5.860 grams.