METABOLISM. 3 
and in the other, mutton tallow. After three weeks, during which 
the animals recovered their original weights, the adipose tissue was 
found to contain, in the one case, fat fluid at 0° C. and agreeing very 
closely with linseed oil in its chemical behavior, while in the other 
case the fat had a melting-point of over 50° C., and was almost 
identical with mutton fat. On the other hand, the same author 
in experiments with tributyrine failed to obtain any noteworthy 
deposition of this substance. 
Munk * fed large amounts of rape oil to a previously fasted dog 
for seventeen days and found in the body considerable amounts 
of fat differing markedly in appearance and properties and in the 
proportion of olein to solid fats from normal dog fat. He likewise 
succeeded in isolating from the fat eruic acid, the characteristic 
ingredient of rape oil. In a second experiment { the fatty acids 
prepared from mutton tallow were fed with similar results, the 
proportion of stearin and palmitin to olein being approximately 
reversed as compared with normal dog fat. The latter experiment 
is also of interest as showing that the fatty acids may be synthesized 
to fat in the body, the change taking place, according to Munk, in 
the process of resorption. 
More recently Winternitz { has experimented with the iodine 
addition products of fats. He observed the retention of a con- 
siderable proportion of iodine in the body (of hens and dogs) in 
organic form and also found iodine in the fat of the body at the close 
of the experiment. Similar experiments on a milking goat § showed 
that at least 6 per cent. of the fat fed passed into the milk. 
Henriques and Hansen || fed two three-months-old pigs for about 
nine months with ground barley, to which was added, in one case 
linseed oil and in the other cocoanut oil, while in the succeeding 
three months the rations were exchanged. Samples of the sub- 
cutaneous fat of the back were taken (with the aid of cocaine) at 
four different times and the fat of the carcasses at the close of the 
experiment was also examined. The results showed an abundant 
deposition of the linseed oil (and cocoanut oil?). On the other 
*Thier. Chem. Ber., 14, 411; Virchow’s Archiv., 95, 407. 
+ Archiv. f. (Anat. u.) Physiol., 1883, p. 273. 
t Zeit. physiol. Chem , 24, 425. 
§ Thier. Chem. Ber., 27, 293. 
| Ibid., 29, 68. 
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