THE RELATIONS OF METABOLISM TO FOOD-SUPPLY. 95 
in a series of experiments upon a dog fed exclusively on lean meat, 
obtained the results shown in the following table, the proteid 
metabolism being expressed in terms of flesh with its normal water 
content (N x 29.4) instead of dry proteids: 
Date. Meat Fed. Metsbeeed: oar Plesk ‘ 
1858. 
UB 25 nn esi ola dallinalands eiateuen dee suutses a 0 223 — 223 
SE QO ins ie cece cases Owe ala ee 0 190 —190 
BDA ONG 28 oe icin aw dae sora a 300 379 — 79 
OO “DO aSep ti: Pecsazi dace odie vaste os 600 665 — 65 
Septy 2 and 3. beste cawecenes es 900 941 — 41 
SE AE Beg cis aa uae tera eee 1200 1180 + 20 
IGS EO Feces decheueed San eae 1500 1446 + 54 
Novel Gg ves «sea cduate gaa Banas 1800 1764 + 36 
AT and, 18; ss eaw cies yaaa 1500 1510 - 10 
OF TR NO edie een ce Bie at 8 arch ts 1200 1234 — 34 
EE D0 Oo OT sees yada bias eeraas nua 900 945 — 45 
EDD. IDB oe: wigiciel a GRAS SR ALD 600 682 — 82 
an) eee) en eae 300 453 —153 
BE PDO 8 Di orcctitas ene Bite dates 176 368 —192 
8 28-DeGs le ace na $e RS wee w 0 226 —226 
-A much later series by E. Voit & Korkunoff,* in which the 
results were determined in terms of nitrogen, may ve cited to illus- 
trate the same point. The food was lean meat from which the 
extractives had been removed by treatment with cold water. It 
contained 1.25 to 1.96 per cent. of fat. 
Nitrogen in 
Food. 
Food, Feces and Urine,} Gain or Loss, 
Grms. Grms. Grms. 
NOtHINGs ods Meng ch na he tas areas 0 3.996 —3.996 
100 grms. extracted meat........ 4.10 5.558 —1.458 
140“ e errr errr mre 5.74 6.495 —0.755 
165“ oe tO eae ae a 6.77 7.217 —0.447 
185 “ ss oh aayaizesdeneeeases 7.59 7.804 —0.214 
200 “ ae Be Nata einen a 8.20 8.726 —0.526 
230 “ se fo cite cece a8 10.24 10.579 —0.339 
360 “ ee PS Ae Sadat 11.99 12.052 —0.062 
410 “ es arn Or ere: 15.58 14.314 +1.266 
460 << es BE Oe Bi tad oe oe 13.68 13.622 +0.058 
* Zeit. f. Biol., 32, 67. 
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