
INVESTIGATIONS ON METABOLISM. III 
Table 13 shows the average daily income and outgo and gain 
or loss for each period. ‘The estimates for nitrogen are on the 
basis of six hours and of thirty hours’ lag in urine. 
Table 14 shows comparison of protein and potential energy 
of the digested nutrients of the food with the protein and energy 
of the materials consumed and of the materials gained or lost 
from the body. ‘The average quantities are those per day for 
each period. The estimates for nitrogen are on the basis of six 
hours’ and of thirty hours’ lag in the urine. 
TABLE 13. 
Nitrogen and carbon balance in experiment No. 4. 


In DicEsTeD+| IN MATERIAL GaINn (+) OR 








NUTRIENTS CONSUMED IN Loss (—) IN 
Periops oF THREE Days EACH. eos phan THe 
Ni ari Ch LN te N. C. 
Allowing 6 hours’ lag |Grams| Grams. |Grams| Grams. | Grams.| Grams. 
Hard mental work, - - | 14.8 | 233.6 | 13.1 | 241.0 toy is ye 
Rest, + ° = - a P1438) 299.60 12.5 |-2487/4')-++-2.3 |—-a14e8 
Hard muscular work, - = TA S233. OTA Lop S81 5 lit. 7 ee 
Allowing 30 hours’ lag. 
Hard mental work, ‘ - | 14.8 | 233.6] 12.7 | 241.0| +2. 






| Thiet oe 
Rest, - = . - | 14.8 | 233.6| 12.4 | 248.4| +2.4 |— 14.8 
Hard muscular work, - PVi4.oy 233. Ole O) 3085 4 — .8 |\—147.9 
TABLE 14. 
Balance of protein and energy in experiment No. 4. 











In DicesTED | IN MATERIAL GaIN (-++) OR 
NuTRIENTS | CONSUMED IN Loss (—) IN 
oF Foop. THE Bopy. THE Bopy. 
PERIODS OF THREE Days. 
2 a ¢ a e 2 
Oy ca = ea Ay a2) 
Allowing 6 hours’ lag. Gr. Cal. Gr. Cal. Gr. Cal. 
Hard mental work, - Rte elOt noe e201 |) EE 2) LOS 
hmosthe. - - - - | 93 | 2485 PBA) 2695 |) 15 fs-—? 210 
Hard muscular work, - Ta OR ees OO. Hic SSA 325 0) tesa LE Rs 
Allowing 30 hours’ lag. . 
- Hard mental work, - os) 2480, 79 | 2505 | Id. Eds 
Rest, - - - - - | 93 | 2505 Bsa hoVTTS Wien lS ill ago 
Hard muscular work, - ePpOsie2505 | tm) A925 nas —1810 


