DIGESTIVE SYSTEM. 



141 



posed of three parts the crop, which is an enlargement 

 of the oesophagus ; a membranous stomach, in whose walls 

 are numerous glands which furnish juices to moisten the 



FIG. 161. 

 (Esophagus. 



Second crop or mem- 

 branous Stonia.cn.. 



Third Stomach or 

 Gizzard.. 



Pancreas. 



Duodenum. 



Cseca. 



Large intestine 



Ureter 



Oviduct 



Cloaca. 

 Vent . . 



Crop. 



Liver. 



Gall-bladder. 

 Bile-ducts. 



Small intestine, 



Digestive apparatus of a Bird Common Fowl. 



food ; and the gizzard, where the food is finally digested. 

 The nutrient products of digestion are taken from the 



