1819.] and on the Blood in general. 21 
distance of about six inches from the pylorus, after which it 
diminished ; and at the distance of 24 inches from the pylorus, 
it was barely perceptible. The contents of the ileum were of a 
greenish colour, and consisted of a greater proportion of the 
excrementitious part of the food than the contents of the duode- 
num. No traces of albuminous matter were found in this portion 
of the intestinal canal. The ccecum in this animal is very large, 
and in the present instance was nearly full of a dark brown pul- 
taceous mass, of a feculent odour, and which yielded no traces 
of albumen. The colon and rectum contained dry brown and 
hard scybala, apparently consisting of little more than the inso- 
luble parts of the food and some biliary matter. None of the 
contents of the intestinal canal, from the pylorus downwards, 
were sensibly acid, or alkaline, nor did they appear capable of 
coagulating milk. 
Very similar phenomena were observed in other instances. 
But when the animal was opened at a longer period after 
feeding, I generally found much stronger evidences of albumi- 
nous matter, not only in the duodenum, but nearly throughout 
the whole of the small intestines. The quantity, however, was 
generally very minute in the ileum; and where it enters the 
cecum, no traces of this principle could be perceived. The 
general appearances also’of the contents of the upper parts of 
the small intestines were always very similar to those above 
described ; that is to say, they were of a yellowish colour, and 
of a ropy or glairy consistence, and mixed with some insoluble 
and excrementitious matter. In the ileum in general the colour 
was more green, the consistence firmer, and the proportion of 
excrementitious matters greater. In the ccecum there was 
always a great collection of feculent matter, which was uniformly 
similar in all its properties to that before described. The contents 
of the colon and rectum also were precisely similar in their 
appearances and properties to those above-mentioned. 
Examination of the duodenal Contents of the Pigeon and 
Turkey.—The pigeon was the same as that employed in observ- 
ing the phenomena of digestion. Just at the commencement of 
the duodenum there were numerous air bubbles which exhibited 
the appearance of having been elicited by effervescence from the 
contents of the stomach upon their first entry into the intestine. 
The colour of the contents of this part of the intestine was 
greenish yellow, and their consistence was thin and glairy, with 
a mixture, as in the instance of the other animals above-men- 
tioned, of some excrementitious matter. Near the pylorus, faint 
traces only of albumen were observed ; but the quantity increased 
to about the distance of six inches, and afterwards rapidly dimi- 
nished ; and at 12 inches from the pylorus, no traces of this 
principle were perceptible; and here the alimentary matters 
assumed a browner colour and firmer consistence, and appeared 
to be altogether excrementitious, 
