INHERITED INJURIES. 115 



inexplicable, though very rarely occurring lo\v 

 down in the lobe of the ear. 1 



Many cases are known of the inheritance of 

 mutilations or malformations arising congenitally 

 from some abrupt variation in the reproductive 

 elements. In such cases as the one-eared rabbits, 

 the two-legged pigs, the three-legged dogs, the 

 one-horned stags, hornless bulls, earless rabbits, 

 lop-eared rabbits, tailless dogs, &c., if the 

 father or the mother or the embryo had suffered 

 from some accident or disease which might plaus- 

 ibly have been assigned as the cause of the 

 original malformation, these transmitted defects 

 would readily be cited as instances of the 

 inheritance of an accidentally-produced modifica- 

 tion. 



The inheritance of exostoses on horses' legs may 

 be the inheritance of a constitutional tendency 



1 See pp. 179-182, Evolution and Disease, by J. Bland Sutton, to 

 whom and to our mutual friend Dr. D. Thurston I am indebted for 

 information on various points. 



I 2 



