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ANATOMY OF THE DOMESTIC FOWL 



FIG. 32. Gizzard and stomach of the fowl. 



A. i, Alveolar glands. 2, Mucous membrane of the inner surface of the pro- 

 ventriculus showing the tubular glands. 3, Connective tissue between the 

 alveolar glands. 4, An artery. 5, Muscularis mucosa. 



B. Photograph of the proventriculus and gizzard. I, Proventriculus showing 

 stomata of glands. 2, End of duodenum. 3, Gizzard showing hornified epithe- 

 lium formed into grooves. 4, The heavy muscular walls. 



