The Shaw Mastodon. 223 



Upper Molars : 



Right — Length, & l / 2 in. 



" Breadth, 3^ in. 



Left — Length, 5^ in. 



" Breadth, 3^ in. 



Mandibular Tusks: 



* Length — On greatest curvature, 1 ft. 1 in. 



" Tip to root, shortest distance, .... in. 



* Diameter, 2 in. 



Large Tusks : 



t Length — iOn greatest curvature, 9 ft. 1 in. 



" Tip to base, shortest distance, . . . . 7 ft. 1 in. 



t Diameter at base, 7^ in. 



t Diameter of core at base, 3 in. 



Free Mandibular Tusks : 



Length, 9% in. and 7^5 in. 



Diameter, 1% in. and i l / 2 in. 



Tooth in Remnant of Jaw : 



Length, 6^ in. 



Breadth, y/z * n « 



Entire Left Humerus : 



Length, 3 ft. 



Greatest lateral diameter of body, 10 in. 



Greatest dorso-ventral diameter of body, 8X in. 



Lateral diameter of head, 11^ in. 



Outside of capitellum to outside of trochlea, . . . 9^3 in. 



We have said that there are at least three mastodons rep- 

 resented in this find. Our reasons are easily told. 



First. — The occurrence of homologous bones proves the 

 presence of at least two mastodons. For example, we have — 



Three tusks and a tip of a fourth. 



(One tusk was so far gone as to crumble before pre- 

 servatives could be applied, and is therefore wanting 

 in the collection.) 



One entire left humerus and part of another. 



Two right tibiae. 



One lower jaw and a portion of another. 



Second. — Examination of the mandibular tusks shows that 

 they must have belonged to three animals. 



'"These figures refer to the right or perfect tusk. 



t These measurements made upon the most perfect tusk. 



\ It is estimated that at least 1 ft. 6 in. is wanting at base to complete this tusk. 



