Nitrogen Output.
Taken in. Nitrogen in Urine. Weight of Fæces (dry).
Feb. 9 10.008 grams. 8.46 grams.
10 8.313 8.57 44.7 grams.
11 7.910 8.55 19.0
12 9.491 8.46 30.0
13 8.628 8.75 28.0
14 8.758 8.28 5.0
------ ------ ------
126.7 grams contain 6.13% N.
53.108 51.07 + 7.76 grams nitrogen.
------ ----------------------
53.108 grams nitrogen. 58.83 grams nitrogen.
Nitrogen balance for six days = -5.722 grams.
Nitrogen balance per day = -0.953 gram.
Average Intake.
Calories per day 2168.
Nitrogen per day 8.85 grams.
On May 6, a second nitrogen balance was attempted covering a period of
seven days, in which, as before, there was an exact comparison of the
income and output of nitrogen. In this period of seven days, as shown
in the accompanying tables, the fuel value of the food was essentially
the same as in the preceding period, but the amount of proteid food
was increased to an average intake of 10.10 grams per day. Under these
conditions there was a distinct plus balance for the seven days amounting
to 2.425 grams, thus showing that with this quantity of nitrogenous food
the body was laying on nitrogen to the extent of 0.346 gram per day. The
average daily amount of nitrogen metabolized during this period was only
8.18 grams, being quite noticeably below the average daily amount for the
year. In other words, the results of this balance period show that with a
consumption of food sufficient to yield about 2200 calories per day, the
body of this subject needed to metabolize only 8.25 grams of nitrogen per
day to more than maintain nitrogen equilibrium. Following are the tables
of results:
_Friday, May 6, 1904._
Breakfast.—Oatmeal 345 grams, butter 7 grams, sugar 30 grams, milk 100
grams, coffee 180 grams.
Dinner.—Bread 67 grams, potato 71 grams, corn 179 grams, pie 133 grams,
milk 200 grams.
Supper.—Biscuit 75 grams, butter 11 grams, potato 106 grams, cake 52
grams, apricots 75 grams, milk 230 grams.
Food. Grams. Per cent Nitrogen. Total Nitrogen.
Oatmeal 345 × 0.40 = 1.380 grams.
Butter 7 + 11 = 18 × 0.11 = 0.020
Sugar 30 × 0.00 = 0.000
Milk 100 + 200 + 230 = 530 × 0.54 = 2.862
Coffee 180 × 0.14 = 0.252
Bread 67 × 1.39 = 0.931
Potato (dinner) 71 × 0.52 = 0.369
Corn 179 × 0.44 = 0.788
Pie 133 × 0.54 = 0.718
Biscuit 75 × 1.21 = 0.908
Potato (supper) 106 × 0.36 = 0.382
Cake 52 × 0.90 = 0.468
Apricots 75 × 0.21 = 0.158
------
Total nitrogen in food 9.236 grams.
Total nitrogen in urine 8.720
Fuel value of the food 2080 calories.
_Saturday, May 7, 1904._
Breakfast.—Oatmeal 382 grams, milk 100 grams, coffee 185 grams, butter 10
grams, sugar 30 grams.
Dinner.—Bread 93 grams, potato 67 grams, rice pudding 141 grams, milk 200
grams.
Supper.—Bread 67 grams, butter 13 grams, potato salad 122 grams, milk 240
grams, coffee 120 grams.
Food. Grams. Per cent Nitrogen. Total Nitrogen.
Oatmeal 382 × 0.41 = 1.566 grams.
Milk 100 + 200 + 240 = 540 × 0.54 = 2.916
Coffee (breakfast) 185 × 0.13 = 0.241
Butter 10 + 13 = 23 × 0.11 = 0.025
Sugar 30 × 0.00 = 0.000
Bread 93 + 67 = 160 × 1.33 = 2.128
Potato 67 × 0.56 = 0.375
Rice pudding 141 × 0.76 = 1.072
Potato salad 122 × 0.35 = 0.427
Coffee (supper) 120 × 0.15 = 0.180
------
Total nitrogen in food 8.930 grams.
Total nitrogen in urine 8.530
Fuel value of the food 1714 calories.
_Sunday, May 8, 1904._
Breakfast.—Oatmeal 386 grams, butter 10 grams, sugar 35 grams, milk 100
grams, coffee 185 grams.
Dinner.—Rice and chicken gravy 178 grams, boiled onions 136 grams,
chocolate pudding 141 grams, milk 150 grams.
Supper.—Potato salad 73 grams, bread 28 grams, chocolate cake 104 grams,
milk 220 grams.
Food. Grams. Per cent Nitrogen. Total Nitrogen.
Oatmeal 386 × 0.35 = 1.351 grams.
Butter 10 × 0.11 = 0.011
Sugar 35 × 0.00 = 0.000
Milk 100 + 150 + 220 = 470 × 0.55 = 2.585
Coffee 185 × 0.11 = 0.204
Rice and chicken gravy 178 × 0.47 = 0.837
Onions 136 × 0.25 = 0.340
Chocolate pudding 141 × 1.03 = 1.452
Potato salad 73 × 0.35 = 0.256
Bread 28 × 1.33 = 0.372
Chocolate cake 104 × 0.95 = 0.988
------
Total nitrogen in food 8.396 grams.
Total nitrogen in urine 7.000
Fuel value of the food 1995 calories.
_Monday, May 9, 1904._
Breakfast.—Oatmeal 330 grams, butter 10 grams, sugar 35 grams, milk 100
grams, coffee 185 grams.
Dinner.—Bread 73 grams, fried potato 125 grams, boiled onions 118 grams,
macaroni and cheese 128 grams, apple pie 110 grams, milk 200 grams.
Supper.—Bread 82 grams, boiled potato 130 grams, butter 12 grams,
chocolate cake 114 grams, milk 245 grams.
Food. Grams. Per cent Nitrogen. Total Nitrogen.
Oatmeal 330 × 0.44 = 1.452 grams.
Butter 12 + 10 = 22 × 0.11 = 0.024
Sugar 35 × 0.00 = 0.000
Milk 100 + 200 + 245 = 545 × 0.58 = 3.161
Coffee 185 × 0.099 = 0.183
Bread 73 + 82 = 155 × 1.33 = 2.062
Fried potato 125 × 0.48 = 0.600
Onions 118 × 0.25 = 0.295
Macaroni and cheese 128 × 1.53 = 1.958
Apple pie 110 × 0.55 = 0.605
Boiled potato 130 × 0.30 = 0.390
Chocolate cake 114 × 0.95 = 1.083
------
Total nitrogen in food 11.813 grams.
Total nitrogen in urine 7.590
Fuel value of the food 2620 calories.
_Tuesday, May 10, 1904._
Breakfast.—Oatmeal 357 grams, butter 11 grams, sugar 35 grams, milk 100
grams, coffee 185 grams.
Dinner.—Soda biscuit 68 grams, boiled potato 160 grams, butter 20 grams,
stewed tomato 103 grams, custard pie 103 grams, milk 200 grams.
Supper.—Soda biscuit 81 grams, butter 14 grams, stewed potato 97 grams,
chocolate cake 66 grams, milk 200 grams.
Food. Grams. Per cent Nitrogen. Total Nitrogen.
Oatmeal 357 × 0.42 = 1.499 grams.
Butter 11 + 20 + 14 = 45 × 0.11 = 0.050
Sugar 35 × 0.00 = 0.000
Milk 100 + 200 + 200 = 500 × 0.54 = 2.700
Coffee 185 × 0.13 = 0.241
Soda biscuit 68 + 81 = 149 × 1.27 = 1.892
Boiled potato 160 × 0.30 = 0.480
Stewed tomato 103 × 0.21 = 0.216
Custard pie 103 × 0.91 = 0.937
Stewed potato 97 × 0.45 = 0.437
Chocolate cake 66 × 0.95 = 0.627
------
Total nitrogen in food 9.079 grams.
Total nitrogen in urine 7.780
Fuel value of the food 2190 calories.
_Wednesday, May 11, 1904._
Breakfast.—Oatmeal 394 grams, butter 10 grams, sugar 35 grams, milk 100
grams, coffee 185 grams.
Dinner.—Soup 141 grams, bread 78 grams, butter 14 grams, boiled potato
101 grams, corn 128 grams, rice pudding 116 grams, milk 200 grams.
Supper.—Biscuit 103 grams, butter 11 grams, corn 113 grams, cake 60
grams, milk 205 grams.
Food. Grams. Per cent Nitrogen. Total Nitrogen.
Oatmeal 394 × 0.46 = 1.812 grams.
Butter 10 + 14 + 11 = 35 × 0.11 = 0.039
Sugar 35 × 0.00 = 0.000
Milk 100 + 200 + 205 = 505 × 0.54 = 2.727
Coffee 185 × 0.13 = 0.241
Soup 141 × 0.48 = 0.677
Bread 78 × 1.25 = 0.975
Boiled potato 101 × 0.31 = 0.313
Corn 113 + 128 = 241 × 0.46 = 1.109
Rice pudding 116 × 0.63 = 0.731
Biscuit 103 × 1.42 = 1.463
Cake 60 × 0.78 = 0.468
------
Total nitrogen in food 10.555 grams.
Total nitrogen in urine 8.280
Fuel value of the food 2183 calories.
_Thursday, May 12, 1904._
Breakfast.—Oatmeal 349 grams, butter 10 grams, sugar 35 grams, milk 100
grams, coffee 185 grams.
Dinner.—Soup 137 grams, fried potato 43 grams, bread 100 grams, macaroni
and cheese 122 grams, bread pudding 80 grams, milk 200 grams.
Supper.—Stewed potato 126 grams, bread 122 grams, cake 73 grams, apricots
81 grams, milk 220 grams.
Food. Grams. Per cent Nitrogen. Total Nitrogen.
Oatmeal 349 × 0.41 = 1.431 grams.
Butter 10 × 0.11 = 0.011
Sugar 35 × 0.00 = 0.000
Milk 100 + 200 + 220 = 520 × 0.57 = 2.964
Coffee 185 × 0.13 = 0.241
Soup 137 × 0.48 = 0.658
Fried potato 43 × 0.76 = 0.327
Bread 100 + 122 = 222 × 1.25 = 2.775
Macaroni and cheese 122 × 1.94 = 2.370
Bread pudding 80 × 0.82 = 0.656
Stewed potato 126 × 0.43 = 0.542
Cake 73 × 0.78 = 0.569
Apricots 81 × 0.23 = 0.186
------
Total nitrogen in food 12.730 grams.
Total nitrogen in urine 9.360
Fuel value of the food 2283 calories.