

INVESTIGATIONS ON METABOLISM. 109 
TABLE Er. 
Nitrogen and carbon balance in four respiration experiments. 
Average daily income and outgo and gain or loss of 
nitrogen and carbon in the body. 















so | In DIGESTED | In MaTERIAL| GAIN (+) OR 
! Nurrients |Consumepin| Loss (—) IN 
Pa or Foop. | THE Bopy. THE Bopy. 
ae SUBJECTS AND EXPERIMENTAL PERIODS. eee : st ee ee 
Z N. G | NDE C2at YN: e 
| (oan eek) Gee Gre Gn Gr. 
1 |E. O., 2% days, no work, - - | 21.8 |280.3 19.6 |225.5/+2.2\+ 54.8 
2|E. O., 2% days, no work, - - | 17.6 |250.7| 18.0 |234.7\—0.4/+ 16.0 
3 |O. F. T., 5 days, light mental work,| 15.2 /232.6) 13.7 |230.9 +1.5/+ 1.7 
| ( Ist period, rest, 158 days, = | 74.9 1233.6) 14.7 \239. 5140.0.) Ang 
| a | 2d period, mental work, 3 days, | 14.8 |233.6 13.1 |241.0)+1.7;— 7.4 
ae | 3d period, rest, 3 days, - - | 14.8 |233.6| 12.5 |248.4/+2.3\— 14.8 
= 1 4th period, muscular w’k, 3 days,| 14.8 233.6 14.1 |381.5|+0.7/—147.9 
< | 5th period, rest, 13@ days, i 84233.6).1502 \26022\—0 -4i = 20.6 
| Whole experiment, 12 days, | 14.8 }233.6 13.6 |279.7|+1.2|— 40.1 

I Total nitrogen of urine. 
2 Carbon of CO, exhaled plus that of urine. 
ABLE Te: 
Protein and energy in four respiration experiments. Comparison 
of protein and potential energy of the digested nutrients 
of the food with the protein and potential en- 
ergy of the materials consumed and of 
the materials gained and lost in 
the body. Average quan- 
tities per day. 


In DIGESTIBLE | IN MATERIAL ff MATERIAL 
NuTRIENTS | CONSUMED IN AINED (-+) OR 

fe} 
4 oF Foon. THE Bopy. Lost (—) IN 
2 THE Bopy 
— | Supyects AND EXPERIMENTAL PERIODS. 
Ze # eal eka ens d a 
ee Soe Sara e Beri Gre 
i e S 2 ct ne ro] 
Ay es Ay eo 7) eo es 







Gr. Cal. Gr. Cal. Gr. Cal. 
1 | E. O., 2% days, no work, - #1 -136,)) 2900 122°) 2310 | +14 |-+ 650 
2|E. O., 24% days, no work, - pI LOWe2Od4SonT13)\2440 | — 34+ 205 
3 |O. F. T., 5 days, light mental WOIK, 6 O54 12530) 00 1) 2530 | 479 oO 
( Ist period, rest, 156 days, z G31 2520 1. 86), 2585 | 4-04 | 05 
j | 2d period, mental work, 3 days,) 93 | 2510 | 82 2615 | +II — 105 
| 
| 
l 
= 

- | 3d period, rest, 3 days, - 2 93/2485 } 78 | 2005 J+ 15-1270 
4th period, muscular w’k, 3 days,; 93 | 2500 88 | 4325 | + 5 |—1825 
5th period, rest, 13 days, - 525204) 405 192840 pF 2 gee 
Whole experiment, 12 days, OF) 2500.0 85, 3080) |—- 8-50 







