GENERAL ORGANOLOGY 



95 



are remarkable for the thick masses of muscle; the former is the glandular 

 stomach (r), the latter is the grinding stomach or gizzard (d), serving for 

 comminution of the food. Behind the stomach the digestive tube narrows 

 into the small intestine (//), following which is the hinder widened part, the 



- J 



m 



Fig. 6o. Fig. 5i. 



Fig. 6o. — Bee larva just after hatching: seen from the ventral surface. The diges- 

 tive tract consists of three portions; a, fore-gut; m, mid-gut; e, hind-gut (not yet con- 

 nected with the mid-gut); sg, limits of segments; st, stigma; (, trachea; ii, ventral nerve- 

 cord (after Biitschli). 



Fig. 6i. — Digestive tract of the domestic fowl: a, cesophagus; ft, crop; c, glandular 

 stomach; d, gizzard; <", liver;/, gall-bladder; g, pancreas; /;, i, small intestine; k, ca?ca; 

 I, large intestine; m, ureters; n, oviduct; o, cloaca. 



large intestine (I), terminating in the anus. The limit of the small and 

 large intestine is usually marked by blind pouches, the cccca (k). Con- 

 nected with the anal gut also are the outlets of the kidneys (;«) and of the 

 sexual apparatus (n) ; hence the terminal portion, serving as the outlet 

 for the urine and faeces, and also for the sexual products, is called the 



