Feb., 1904.] 



KNOWLEDGE & SCIENTIFIC 



Mastodon of the Upper Miocene and Lower Pliocene 

 periods in the Old World, of the Pliocene and Pleistocene 

 periods in America, are provided with grinding teeth 

 scarcely njore complicated than those of the earlier 

 Tetrabdodoii. Their upper tusks also difier only from 

 those of tiie latter in ha\ing lost the band of enamel 



l-"JO. .\. — Stegodon ganesa ; Icfl side-view 

 of sl<ull. — Lower Pliocene; India. 



(All figures much reduced, as indicated by fractions. 



