422 ANALYSIS OF THE BLOOD OF THE YENA PORTA, ETC. 
the vena porta of dogs contains on the average more fibrine 
than that of horses. 
Quantity of Sugar. 
Animals. 
Diet. 
In the blood of the vena 
porta, entering into the 
liver. 
In the blood of the he- 
patic veins on issuing 
from the liver. 
Dog 
Fasting for two days 
— 
0'764 gr. per cent. 
D 
„ 
— 
0-638 
)) 
99 
— 
0-804 
Fed with meat 
— 
0-814 
99 
99 
— 
0-799 
99 
# 99 
— 
0-946 
99 
Fed with cooked 
potatoes 
Inappreciable traces 
0981 
j, 
)) 
0854 
Horse] 
Fed with bran, hay, 
and straw 
0055 gr. per cent. 
0-893 
J) 
99 
0-0052 
0-635 
The blood of the hepatic veins, carefully collected and 
without any admixture, does not contain fibrine. The few 
flocks which are sometimes obtained by beating, in horses, 
are almost entirely constituted of white globules, which are 
seen in very great abundance in the blood of the hepatic 
veins compared with the blood of the vena porta. The blood 
of the hepatic veins in dogs acts in the same manner with 
regard to fibrine — that is to say, this matter disappears almost 
entirely in the liver. 
Very careful comparative analyses between the blood of the 
vena porta and that of the hepatic veins have proved to me, 
that a remarkable quantity of albumen disappears also in the 
liver, and the quantity disappearing is relatively greater in 
dogs than in horses. 
On this remarkable fact, that fibrine disappears in the liver, 
I have established my opinion, already given in my first 
Memoir, that the sugar which is formed in the liver is pro- 
duced at the expense of the fibrine. 
3. Fat and blood globules . — The blood of the vena porta 
always contains much more fat than the blood of the hepatic 
veins. The serum of the blood of the vena porta in dogs fed 
with meat is generally richer in fat than that of horses. Never- 
theless, we do not find more fat in the serum of the hepatic 
veins in dogs than in horses. 
In horses, the globules of the blood of the vena porta con- 
tain more water and iron ; on the contrary, they contain less 
globuline, extractive matters, and salts, than those of the 
