( 296 J 
WALTHER showed that only a very small portion of the whole 
quantity from 40 to 50 gr. of the resorbed fat is transported 
through the ductus thoracicus. And FRANK observed that, after 
ligaturing the ductus thoracius, the resorption of fatty acids in the 
small intestine was considerable. „These observations’, HAMMARSTEN 
says rightly in his textbook on physiological Chemistry, hardly 
seem, however, under normal circumstances, capable of being trans- 
ferred to the resorption of neutral fats in man’. Munk and Rosen- 
STEIN in their investigations on a girl who had a lymphfistula in 
the leg, could find again in the chyle scarcely more than 60°/, of 
the fat administered per os. 
It will be seen that there is still little agreement with respect to 
the direct transition of fat into the blood capillaries. It appears to 
me that I have succeeded in showing with certainty that 7m the 
small intestine of the dog the blood capillaries have a considerable 
share in the resorption of rat. 
The experiment was as follows. 
In a large dog in a state of profound narcosis a loop of the small 
intestine was produced by means of an incision in the linea alba. 
In consequence of a rich meal (bread with a great deal of lard) 
which the dog had received the night before the chyle vessels 
were splendidly injected. At distances of 17 cM. strings are thrust 
through the mesenterium, close to the attachment of the intestine. 
By means of these strings pieces of the intestine will be shortly 
afterwards detached. The chyle vessels of the central piece of the 
intestine b are carefully bound together. Those of the adjoining 
parts @ and ¢ are not. The whole loop is then well rinsed with a 
tepid solution of NaCl-solution of 0.9°/,. The strings are then 
tightened and the loop divided into three equal parts. Into each of 
the three parts is injected 25 c.c. of a lipanine-soap-emulsion, con- 
sisting of 200 cc. sapo medicatus of 5 °%/, + 50 ce. lipanine. When 
from the side of a and ce two pieces a’ and c’ had after rinsing 
been untied, everything was again restored to the ventral cavity, 
which was then closed. 
Five hours later the intestine was removed from the animal, 
which was still in a state of narcosis and was now killed. 
The determination of the percentage of the fat of the contents 
of the loop inclusive of the mucosae showed that in b, where the 
chylevessels were bound together, still 0.419 gr. was resorbed; 
whereas in a and c, that is to say in chyle-vessels not bound 
