INTRODUCTION. 
31 
very large, and sometimes wanting, and at the extremity 
dilated into a globular or oblong sac named the cloaca. 
Fig. 28. Fig. 29. 
In Fig. 28, which represents the digestive organs of a 
hawk, the oesophagus is wide, and dilated into a crop, then 
narrowed, with the proventriculus^ or glandular lower part, 
moderate ; the stomach is rather large, round, with the mus- 
cular coat very thin, the tendons roundish ; the intestine 
rather short and wide, the coeca very small, the rectum or 
space between the coeca and the end short, and dilated into 
a globular cloaca. 
In Fig, 29, that of the digestive organs of an owl, the 
oesophagus is very wide and nearly uniform, without crop ; 
the stomach extremely large and thin ; the intestine of mode- 
rate length and width ; the coeca large ; the cloaca globular. 
