530 EXPERIMENTS ON THE PANCREATIC SECRETION. 
When the alkaline mass is saturated with sulphuric acid 
instead of with acetic acid, a distilled liquid of a very disagree- 
able smell is obtained, which contains also butyric acid and 
valerianic acid. 
Ann. der Chem. und Pharm., and Pharm. Central Blatt, 
1850, No. 14. 
Foreign Extracts. 
EXPERIMENTS ON THE PANCREATIC SECRETION IN 
CATTLE. 
By M. G. Colin, Principal Teacher of Anatomy at theAlfort School. 
[Extracted from the Report of the Transactions of the Academy of Sciences, 
17th March, 1851.] 
The admirable experiments which led M. Bernard to the 
discovery of one of the most remarkable properties of the pan- 
creatic fluid had sufficient interest in them to induce crhe to in- 
stitute some similar experiments on animals which, by their 
regimen and process of digestion, differed as widely as possible 
from carnivora , with a view of ascertaining if in all, this fluid 
possessed identical characters and properties. 
It seemed difficult to conceive, a priori, how in herbivorous 
animals, whose aliment contains so little fatty matter, the fluid 
secreted by the pancreas could exhibit emulsive properties 
similar to what it did in carnivorous, on which it was that 
M. Bernard made his experiments. Nevertheless, the identity 
of action shewed this was not to be disputed, while its positive 
demonstration affords grounds for more extended inquiry. Some 
light was still wanted to be thrown upon phenomena so obscure 
and so little accessible as in this secretion, to determine the 
quantity secreted within any given time, and to determine 
whether the secretion was continued or intermittent, and whether 
it was more abundant at the time digestion was going on, and 
if its escape impeded or interfered much with intestinal digestion. 
With such views it was that I instituted a series of experiments 
which I have submitted to the Academy, wherefrom the prin- 
cipal results appear to me to be included in the following pro- 
positions : — 
1. The quantity of fluid secreted in a cow of ordinary size 
is very considerable, since it amounted in the course of an hour 
to about two pints, a collection which need not surprise us 
when we remember that in the thirty pounds of food which such 
an animal daily consumes there exists, according to the analysis 
of M. Boussingault, upwards of a pound of fatty matter, which 
