ANATOMY OF THE FUR SEAL. 



11 



The teeth are colored as they protrude from the gum, the brown color appearing 

 first at the tip and working downward. 



PLATE I. All figures natural size. 



Fig. 1. Eecently born male with milk canines and fourth milk molar in place. 



2. Male with upper milk canines still in place. 



3. Male with last upper true molar not yet through the gum. 



4. Male with all teeth in place and all save last upper molar well developed. 

 5. Dentition of 2-year-old female, showing the teeth at their maximum. 



6. Dentition of middle-aged female, 4 or 5 years old, in which the absorption of the last molars 



has begun. 



7. Dentition of old female with absorption of molars advanced. 



8. Dentition of oldest female obtained, showing the true molars of both jaws worn away and 



absorbed and all teeth diminished in size. 



PLATE II. Ail figures natural size. 



Fig. 1. Dentition of yearling male. 



2, Dentition of 4-year-old male. 



3. Dentition of adult male, 7 or 8 years old, showing characteristic wearing of anterior face of 



upper canine. 



NOTES ON THE ANATOMY OF THE FUR SEAL. 

 By Robert E. Snodgrass. 



THE ALIMENTARY CANAL AND LIVEE. 



The pyloric end of the stomach is bent upon the anterior surface of the cardiac. In 

 a bull the length from the cardiac end to the extreme right portion is about 18 inches, 



Fig. 1.— Stomach of seal pup, one-half natural size. 



and from here to the pyloris 8 inches. The small intestine is extremely slender. In a 

 bull it measures in length a little over 100 feet; in a cow, between 50 and 60 feet. The 

 large intestine is likewise narrow and is about 7 feet long in a bull and 2 feet in a cow. 

 In a pup 22 inches long the small intestine is about 28 feet and the large 10 inches. 

 Hence the intestine increases in length proportionately as the animal matures. The 

 ccecum is short and blunt. From the pyloris the small intestine goes backward and 



