Physiological economy in nutrition, with special reference to the minimal proteid requirement of the healthy man / an experimental study

by R. H. Chittenden

Dinner.—Bread 27.9 grams, beef 48 grams, potato 207.5 grams, butter 19 grams, pie 272 grams, coffee 210 grams, sugar 10 grams.

Food.		Grams.	Per cent Nitrogen.			Total Nitrogen.
Bread	22 + 59 + 27.9 =	108.9	×	1.61	=	1.753	grams.
Tea		146.0	×	0.018	=	0.026
Macaroni		129.0	×	0.87	=	1.122
Sweet potato		85.5	×	0.28	=	0.240
Butter	15 + 19 =	34.0	×	0.088	=	0.030
Fig cake		115.0	×	0.69	=	0.793
Sugar	15 + 10 =	25.0	×	0.00	=	0.000
Coffee (lunch)		210.0	×	0.09	=	0.207
Beef		48.0	×	2.64	=	1.267
Potatoes		207.5	×	0.36	=	0.747
Pie		272.0	×	0.49	=	1.332
Coffee (dinner)		210.0	×	0.15	=	0.315
	Total nitrogen in food					7.832	grams.
	Total nitrogen in urine					7.490

Fuel value of the food

2232 calories.

Wednesday, February 10, 1904.

Breakfast.—Bread 33 grams, tea 146 grams.

Lunch.—Bread 71 grams, butter 10.5 grams, apple fritters 119 grams, coffee 210 grams, sugar 21 grams.

Dinner.—Roast pork 80 grams, bread 55.7 grams, butter 27.8 grams, cranberry sauce 150 grams, coffee 210 grams, sugar 21 grams.

Food.		Grams.	Per cent Nitrogen.			Total Nitrogen.
Bread	33 + 71 + 55.7 =	159.7	×	1.65	=	2.635	grams.
Tea		146.0	×	0.075	=	0.109
Butter	10.5 + 27.8 =	38.3	×	0.088	=	0.033
Apple fritters		119.0	×	0.45	=	0.535
Coffee (lunch)		210.0	×	0.11	=	0.231
Sugar	21 + 21 =	42.0	×	0.00	=	0.000
Roast pork		80.0	×	4.80	=	3.840
Cranberry sauce		150.0	×	0.04	=	0.060
Coffee (dinner)		210.0	×	0.11	=	0.231
	Total nitrogen in food					7.674	grams.
	Total nitrogen in urine					6.140

Fuel value of the food

1694 calories.

Thursday, February 11, 1904.