SUPPLEMENTAL HISTORY OF MAN. 181 



they are reddish brown ; and in Normandy they 

 are white. Colour, therefore, with them as with 

 mankind and most other animals, is one of the most 

 variable of specific characters. 



Light hair in the human race is generally soft and 

 silky; in the dark varieties and Negroes it is coarse 

 or woolly. Analogous to this, the white swine of 

 Normandy have the hair so much softer than other 

 varieties, that their bristles cannot be made use of 

 by the brushmakers. The hair of the wild boar is 

 much more strong and coarse than in any of the 

 domesticated varieties. 



The crania of the different varieties of swine pre- 

 sent differences of conformation, at least, equal to 

 those between the most opposite of the human race, 

 as we shall have occasion to show hereafter. 



The great length of legs of the Normandy swine, 

 from which the English usually compare them with 

 greyhounds ; the solid hoofed herds found in the 

 north of Europe, and the several transatlantic va- 

 rieties, exhibit differences of mechanical structure 

 far more striking than any to which mankind have 

 been subjected. 



If, however, difference of mental powers be allowed 

 as indicative of variety in the human race, no fair 

 analogy can certainly be presented to it in the in- 

 ferior animal creation. It is not possible to doubt 

 the existence of considerable difference in this re- 

 spect among individuals independently of all edu- 

 cation. A single .family will frequently evince it, and 



