382 G. F. Barker—Physiological Chemistry. 
(8.) In March, LEnMANN communicated to the Academy* the 
results already mentioned, together with some new facts, 
found not a trace of sugar in the portal blood of dogs, either 
when fasting or fed on meat; when fed on boiled: potatoes, 
however, traces were detected. In the hepatic blood, on the 
other hand, of three dogs fed on meat, 0°814, 0°799, 0:946 
cent of sugar was found; of three others, fasting for two days, 
0°764, 0°638, 0-804 per cent; and of two others fed with pota- 
toes, 0-981, 0°854 per cent. In arterial blood, sugar is rarely 
found. Lehmann was unable to detect it in that of horses fed 
on starch or oats, or of rabbits fed on sugar, or given a large 
quantity of beets or carrots. j 
(9.) ‘To this paper, BERNARD added a note,} in which he 
says that the meat on which his animals were fed, was proved 
by analysis to be free from sugar; asserts that the sugar found 
in the general circulation is liver-sugar which has escaped 0xy- 
dation in the lungs; controverts Schmidt’s idea that sugar, like 
urea, is formed throughout the body and is simply excreted DY 
the liver; remarks that the formation of sugar by the liver cam 
no longer be disputed; and concludes that the only question 
remaining is, from what materials is this sugar formed. Since 
his researches have shown that the ingestion of fat dim 
the production of sugar, he is disposed to agree with Lehmann 
that it is formed from nitrogenous materials. iis: 
(10.) On the 26th of March, Ficurer communicated net 
experiments to prove the existence of sugar in bl 
A young dog, large and vigorous, was fed, after three days fast- 
ing, with raw beef for eight days, then allowed to fast forty 
hours, and then given 2} pounds of raw beef. T:wo hoursaits 
an incision was made in the right side of the animal, the i 
finger introduced through the opening along the inferior bora 
of the liver, and the portal vein seized and ligated. Then 
abdomen was opened and the blood from the engorged po 
de 
the copper-test; and by this means the sugar present wae 
termined to be 0-248 io cent of the entire a. ye ie 
ms, 1¢: after 
above treatment, 0-15 grams, and afforded only traces we 
On repeating the experiment with another dog fed for 
* O.R., x1, 585. } Ib, p. 589, $ Tb.,p- 67% 
