134 Dr Knox on the Anatomical Structure of the 
tion of the general bag of the stomach, which has no gastric 
glands, is much larger in the cassowary of New Holland, than in 
the Indian cassowary ; or, in other words, the glandular crop ap- 
proaches much nearer the gizzard in the latter than in the former. 
The gizzard is weak in both. I consider this as a character 
distinguishing these birds from the ostrich. It is true, that they 
must long since have ceased to be fed agreeably to their natural 
disposition ; and this, according to the opinions of Mr Hunter, 
may have had some effect in diminishing the muscularity of the 
gizzard. I must suppose it owing to the same cause, that the 
gizzard of the ostriches I have dissected on their native desarts, 
always appeared to me very muscular, whilst others, who have 
examined the same bird, after being long in a state of captivity, 
describe the gizzard as not being remarkably so. It must, how- 
ever, be evident to all, that the ostrich is strictly graminivorous, 
whilst the food of the cassowaries of India and New Holland is, 
without doubt, chiefly composed of insects and reptiles. 
The proportional lengths of the intestinal tube, in feet and 
inches, are as follows : 
w 
< 
12; 
Length of the Animal | 
from the Bill to the ex-| 
tremity of the Coccyx. I 
Length of the Intestinal 
Canal to the insertion 
of the Coeca. 

Length of each Coecum. | 
Length of the Intestinal | 
1 Canal from the Insertion 1 
! of the Coeca to the Anus, j 
Whole length of the In- 
testinal Canal, includ- 
ing the Coeca, 
Length from the inser- 
tion of the Biliary Ducts 
to that of the Coeca, 
Ratio of the length of the 1 
Intestinal Canal with! 
that of the Body. | 
Ostrich, — Cuv. 
Ft. In. 
6 4.69 
Ft, In. 
Ft. In. 
2 1.5 
Ft In. 
Ft. In. 
49 0.0 
Ft. In, 
: : 1 : 8 
Galeated Cas- 
sowary.-Cuv. j 
3 8.72 
4 7.35 
0 5 82 
0 10.63 
6 .5.95 
:: 1:1.7 
R. K. 
4 6 
0 
1 
6 
9 6 
3 6 
Cassowary of ^ 
New Holland. [- 
R. K. ) 
... 
16 near- 
ly- 
0 
51 
1 
6 
22 0 
14 0 
In both birds the coeca resemble each other closely ; they are 
- very small, and the orifices by which they penetrate the intestines 
are so harrow, that air blown into the intestines cannot be forced 
into the coeca : their parietes are thin and delicate, and they con- 
