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

by R. H. Chittenden

NITROGEN BALANCE.—Steltz.

		Nitrogen Taken in.		Output.
				Nitrogen in Urine.		Weight of Fæces (dry).
Feb.	29	9.989	grams.	7.90	grams.	23	grams.
Mar.	1	8.090		5.98		22
	2	8.487		6.58		21
	3	9.300		8.10		45
	4	11.107		4.66		18
	5	10.024		8.69		36
	6	10.392		8.20		31
						10
						206	grams contain 6.66% N.
		67.389		50.11	+	13.719	grams nitrogen.
		67.389	grams nitrogen.		63.829	grams nitrogen.

Nitrogen balance for seven days	=	+3.560	grams.
Nitrogen balance per day	=	+0.508	gram.

NITROGEN BALANCE.—Loewenthal.

		Nitrogen Taken in.		Output.
				Nitrogen in Urine.		Weight of Fæces (dry).
Feb.	29	10.466	grams.	7.38	grams.	16.5	grams.
Mar.	1	7.825		7.05		38.0
	2	8.487		7.07		21.0
	3	8.750		7.83
	4	10.427		7.35		15.0
	5	10.654		4.29		22.0
	6	10.886		8.07		56.0
						168.5	grams contain 7.11% N.
		67.495		49.04	+	11.980	grams nitrogen.
		67.495	grams nitrogen.		61.020	grams nitrogen.

Nitrogen balance for seven days	=	+6.475	grams.
Nitrogen balance per day	=	+0.925	gram.

NITROGEN BALANCE.—Cohn.

		Nitrogen Taken in.		Output.
				Nitrogen in Urine.		Weight of Fæces (dry).
Feb.	29	10.442	grams.	9.74	grams.
Mar.	1	7.825		6.86
	2	8.487		7.29		43	grams.
	4	10.215		5.59		24
	5	10.483		9.55		57
	6	8.164		6.77		25
						149	grams contain 6.63% N.
						= 9.878	gr.
						-1.401	[35]
		55.616		45.80	+	= 8.477	grams nitrogen.
		55.616	grams nitrogen.		54.277	grams nitrogen.