NDTKITION FOR LAYERS 



47 



canal and to expose the ovary and oviduct. 1, tongue ; 

 2, pharynx; 3, first portion of the oesophagus; 4, 





Fig. 6 — ^ANATOMY OF A FOWL (Howard) 



crop ; 5, second portion of the oesophagus ; 6, succentric 

 ventricle; 7, gizzard; 8, origin of the duodenum; 9, 

 first branch of the duodenal flexure; 10, second branch 



