NUTKITION roil LAYERS 



47 



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

 2, pharj'nx; 3, first portion of the oesophagus; 4, 



'4 



21' 





♦'■if 





U 'J2 



Fig. 6 — ANATOMY OF A FOWL (Howard) 



crop ; 5, second portion of the oesophag-us ; 6, suecentric 

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

 first branch of the duodenal flexure; 10, second branch 



