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. 



