6o 



A BOOK OF WHALES 



the form which is indicated in a diagrammatic form 

 in the accompanying sketch. The oesophagus opens 

 into a wide blind sac, near to the upper oesophageal 

 side of which opens out of this the second division 

 of the stomach. At the lower end of this latter and 

 in the thickness of its wall is a small passage, 



FIG. 15. STOMACHS OF VARIOUS CETACEA. 



(From Jungklaus.) 



Left hand fig., Common Porpoise. Right hand fig., Rorqual. Middle upper 

 fig., Globicephahis. Lower fig., Hypothetical transitional form between 

 two types of stomach. /, Chambers of stomach. 0, (Esophagus. P, 

 Pylorus. PV, Entrance of bile duct. D, Duodenum. S, Spleen. AD, 

 Ampulla duodenata. Dh, Bile duct. G, Boundary between first and 

 second stomach. 



regarded as the third division, which leads into a long 

 and rather narrow division of the stomach ; this is 

 the fourth chamber ; it is curved in an undulating 

 fashion, and from it arises the commencement of the 

 small intestine, which commencement is dilated, and 

 might be regarded by some as a fifth stomachal 

 chamber were it not for the fact that into it opens the 

 combined duct of the liver and of the pancreas. 



