GLUCOSE IN THE ANIMAL ORGANISM. 
453 
Here we find glucose not only in the liver, hepatic veins 
and chyle, as in the preceding, but also in the arterial blood, 
the lymph, the blood of the vena porta , that of vena cava inferior 
and vena cava superior , and also in the parietes of the small 
intestine, and in the muscular flesh. 
The sugar furnished by the liver in the physiological con- 
ditions in which the animal was, being in very great quantity, 
was no longer entirely destroyed, as in the preceding cases, 
in going from this organ to the lungs : whence the presence 
of glucose in the arterial blood. It was also met with, c ceteris 
paribus , in the lymph, the blood of the vena porta , the in- 
testinal parietes, which may also imbibe it from the alimen- 
tary matters passing through the digestive tube. 
On what facts does intestinal glucogenia support itself in 
order to vindicate its part in animal glucogenia? Not on 
researches which would have had the object of establishing 
the formation of sugar in the intestinal parietes, as it might 
have appeared natural to do, but on the presence of glucose 
both in the chyle and in the lymph ; we have, indeed, found 
some in these two liquids, as the foregoing two experiments 
show ; the dog gave 0 166 for the lymph, and the horse 0*442. 
But if we seek the quantity of sugar furnished bv a lymphatic 
vessel of the mesentery coming directly from the intestine, 
as chosen by the author of intestinal glucogenia himself, what 
do we Hud in a cow during digestion like the horse and the 
dog ? 0* 186 gr. Can this result, compared with the preceding, 
0*166 gr. and 0*422, even lead us to suspect that the small 
intestine is the seat of the production of sugar, when the 
lymphatics of other parts of the body, so far from giving, as 
this hypothesis would require, a much smaller quantity of it, 
produce on the contrary equal and even greater quantities 
of it ? 
These observations superabundantly prove that intestinal 
glucogenia has no reasonable foundation. 
From all the facts given in this work, it results that in fish, 
reptiles, birds, and mammalia, immediately after death, w r e 
always find a large quantity of glucose in the liver; that the 
presence of this principle in other parts of the organism is 
accidental, temporary, and due only to peculiar physiological 
conditions, which induce in this organ a greater production 
of sugar. If these facts are well proved, they demonstrate 
that in the vertebrata, of all the organs, the liver alone 
forms sugar. — Comptes Reiulus , No. 12, March 22, 1858. 
lessor of Anatomy at the Imperial Veterinary School of Alfort, for having 
been able to collect chyle and lymphs from the dogs and herbivora for our 
experiments. 
XXXI. 
60 
