AMERICAN SWAN. 



143 



horny texture, 1 inch 8 

 twelfths long, 1 inch 5 

 twelfths broad. There is 

 a large pyloric sac, from 

 which the duodenum, hi 

 jk, comes off. It curves 

 round the edge of the sto- 

 mach to the length of 8^ 

 inches, as represented by. 

 Fig. 2, a h, forming three- 

 fourths of a circle, and 

 reaching the sixth rib 

 on the left side ; it then 

 curves back upon itself, 

 h c, to above the stomach, 

 where it receives the bi- 

 liary ducts, passes up- 

 wards and backwards 

 along the spine until it 

 nearly reaches the anus, 

 then returns forward as 

 far as the upper edge of the stomach, 

 then forms a small loop 3 inches long, 

 comes torward again, passes backward, 

 then forward, again backward and for- 

 ward, now becomes anterior, and curves 

 parallel to the duodenum, reaching 

 the seventh rib, then passes backward' 

 parallel to itself, as far as the liver, 

 curves again in the same direction, and <£ 

 proceeds backward, then sweeps back- 

 ward behind to near the anus, where 

 it becomes accompanied by the coeca, 

 comes forward on the right side to 

 the anterior edge of the stomach, bends 

 abruptly backwards, and terminates in 

 the anus. It thus forms 16 curves or 8 

 folds. Its length is 11 feet 5 inches. 



