ALIMENTARY CANAL 



27 



straight large intestine of the crocodile by its convoluted 

 course. So too with the gallinaceous bird (fig. 10), where 





Fig. 9. — Chauna chavaria ; Alimentary Tract. 



s, proventriculus ; g, glandular tract ; d, duodenal loop ; l-l, large loop of small 

 intestine ; y, vitelline duct : c, cseca ; l.i, large intestine ; p.v, portal vein ; r.D, 

 rectal vein. {After Chalmeks Mitchell.) 



Fig. 10. - Argtis gigantetcs, Chick ; Intestinal Loops 

 (after Chalmers Mitchell). 



