APPENDIX. 541 



large an opening as at beginning. In the Por- 

 poise it is not above one, and in the Bottle-nose 

 about five inches long. 



The fourth stomach is of considerable size ; but 

 a good deal less than either first or second. In 

 the Piked Whale it is not round, but seems flat- 

 tened between the second and fifth. In the Por- 

 poise it is long, passing, in a serpentine course, 

 almost like an intestine. The internal surface is 

 regular but villous, and opens on its right side 

 into the fifth, by a round opening smaller than the 

 entrance from the third. 



The fifth stomach is in the Piked Whale round, 

 and in the Porpoise oval : it is small, and termi- 

 nates in the pylorus, which has little of a valvular 

 appearance. Its coats are thinner than those of 

 the fourth, having an even inner surface, which is 

 commonly tinged with bile. 



The Piked Whale, and, I believe, the large 

 Whalebone Whale, have a coecum ; but it is want- 

 ing in the Porpoise, Grampus, and Bottle-nose 

 Whale. 



The structure of the inner surface of the intes- 

 tine is in some very singular, and different from 

 that of the others. 



The inner surface of the duodenum in the Piked 

 Whale is thrown into longitudinal rugge or valves, 

 which are at some distance from each other, and 

 these receive lateral folds. 



The duodenum in the Bottle-nose swells out 

 into a very large cavitj^, and might almost be 



