THE TKOTTING EHINO 131 



simus), averaging over six feet in height, which 

 feeds on grass, and is therefore seen more in the 

 open ; and the prehensile-lipped or black (R. bicor- 

 nis), averaging five feet, which frequents thickets 

 or brush covered hills, and feeds on twigs, roots 

 and brush. Except for the varying length of their 

 horns, the African do not differ among themselves 

 so much as the Asiatic; nor does wide divergence 

 in length of horn suggest structural differences 

 any more in this animal than spread of antlers and 

 number of points do in moose, wapiti, or other 

 American deer. Yet the horns of African rhinos 

 show great variation. The lower or first horn may 

 be any length from one foot and a half to four feet, 

 though this extreme is not often seen these days, 

 three feet being about the limit ; the upper or second 

 horn may be from three or four inches up to two 

 feet. At times the two horns are about equal and 

 then the length is medium ; by some this is declared 

 a sub-species called " ketloa ": more often, how- 

 ever, the lower horn is considerably longer than the 

 upper. As between horns of the African and the 

 Asiatic, those of the former have, as a rule, more 

 curve and run quicker to a point ; and in length the 

 Asiatic are insignificant by comparison— fifteen 

 inches being unusual, and eight more nearly the 

 average of the Indian proper, while three or four 

 inches would be the length of the other Asiatic 



