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: 
oe F ” in 
Date. Meat Fed. Metshehzed. Tn eae 
1858. 
AUP 25 coe are rude ait ete ete e 0 223 —223 
OE 2G tex cea sone dost annuus 0 190 —190 
SE QI and 2S a, seats acssatiaia viele oe 300 379 — 79 
Of) 20 - Sept day o ya. eaunumtondenns 600 665 — 65 
Sept. 2and3.................., 900 941 — 41 
a: Ses Reo re ne 1200 1180 + 20 
PNG) Oise otaiahte dome etna es 1500 1446 + 54 
NOW Gey wise thee eidens e eeancsn weds 1800 1764 + 36 
PEON ANd US s 36 odes suso'a nase a 4 awe 1500 1510 — 10 
pica (- Panagdian |S Peer aee ean ermrea eters 1200 , 1234 — 34 
PEO ee Dil aes Sede han ate aunts occas 900 945 — 45 
EE OE DB x accor spbiars s dgedieda aa 8 600 682 — 82 
BE AE NE DBs benches C4 cand ae 300 453 —153 
BES DOE. ADT a al intce a con la eae Sect 176 368 —192 
SO 2B =DCG. Wig an 48s ed tie Sos wave 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. rms. rms. 
INOUE i isiet es acaye 294 bates dus euees eis ee 0 , 3.996 —3.996 
100 grms. extracted meat........ 4.10 5.558 —1.458 
14006 8 Bee oseaee aaa 5.74 6.495 —0.755 
165“ ee CO oc ieee ieee 6.77 7.217 —0.447 
185 “ a aometere 7.59 7.804 —0.214 
200 “ ss eae cua 8.20 8.726 —0.526 
230 “ “ <6 ae emta kes 10.24 10.579 —0.339 
360 “ ee Oe ae aanah segs 11.99 12.052 —0.062 
410 “ es Oe Plea hb ccet are 15.58 14.314 +1.266 
460 “ ef TO a Satna ai 13.68 13.622 +0.058 
* Zeit. f, Biol., 82, 67. 
