Cassowary of New Holland, 
tain a fluid matter differing very much from the usual contents 
of the intestinal tube. The form of the gizzard, and of the in- 
testinal tube generally, I have described in a note below The 
cloaca seemed to be formed much as in the ostrich, and to serve 
as a reservoir for the urine only ; the rectum opening into it by 
a comparatively small orifice. The external opening of the ovi- 
duct in the Emeu of New Holland presented a circular range of 
membranous folds, which were wanting in the Indian Cassowary, 
In the latter, the hepatic canal is inserted along with the cystic 
and pancreatic ducts into a small bag, adhering to the intestinal 
canal, formed of the same tunics as the intestine itself. In the 
New Holland Cassowary, the hepatic and cystic ducts enter, as in 
the other, separately, but the small bag described above is want- 
ing. The gall-bladder is wanting in the ostrich : the Galeated 
Cassowary has it of an oblong shape, and very large ; it was quite 
filled with a dark green bile. In the New Holland Cassowary the 
gall-bladder is remarkable, both as to shape and strength. It is 
as it were divided into two portions ; the parietes are strong and 
dense. The same may be said of the cystic duct, which bears no 
resemblance to the hepatic. The ducts conveying the bile from 
the liver to the gall-bladder enter by the fundus, and are very 
short. I am not aware of any physiological reason to account 
for these remarkable differences in birds so nearly resembling 
each other. 
The heart of the Emeu of New Holland is more elongated 
than that of the Indian Cassowary ; and some of its great arteries 
had undergone that change into semi-ossified plates, found so fre- 
quently in the arteries of the human subject, when aged. The In- 
dian Cassowary has long been remarkable for the continuation of 
the cartilaginous rings of the bronchia into the lungs themselves, 
* In the Indian Cassowary, the duodenum is very large, but contracts gradually 
to the insertion of the biliary ducts. From this point, the intestine continues to di- 
minish in caliber, to within a few inches of the insertion of the coeca. It then ra- 
pidly, though not suddenly, increases to its final termination in the cloaca. In the 
New Holland Cassowary, the duodenum suddenly dilates into a considerable bag, 
and as suddenly contracts ; the intestine continues to do so for about 16 inches, 
when it dilates on approaching the hepatic ducts. From this point, the intestine 
preserves a considerable uniformity of appearance, till it approaches the insertion of 
the coeca, when it rapidly increases to a very great diameter. The aperture hj 
■which the rectum communicates with the cloaca is of moderate size. 
