ANATOMY OF THE FUR Sfc:AI> 



11 



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

 first at the tip aud workiug downward. 



PLATE I. All figures natural size. 



Fig. 1. Recently born naale with milk cnuines and fourth milk molar in place. 



2. j\Iale with upper milk cauiues still in place. 



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



■1. Male with all teeth in place aud all save last upper molar well developed. 

 5. Dentition of 2-year-oId 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 obtaiued, showing the true molars of both jaws worn away and 



absorbed and all teeth diminished in size. 



PLATE II. All 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 cauiue. 



NOTES ON THE ANATOMY OF THE FUR SEAL. 



By Robert E. Snodgrass. 



THE ALIMENTARY CANAL AND LIVER. 



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, 



FiQ. 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 aud 60 feet. The 

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

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

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

 ca'citm is short and blunt. From the nvloris the small intestine goes backward and 



