222 PRINCIPLES OF STOCK-BREEDING. 



This is often the case in the transmission of dis- 

 ease, as has already been noticed in the chapter on 

 hereditary diseases. Of two hundred and fourteen 

 cases of consumption recorded by Lugol, one hundred 

 and six were males and one hundred and eight fe- 

 males ; of these, sixty-three males inherited the disease 

 from their fathers and forty-three from their mothers : 

 and sixty-one females inherited the disease from their 

 mothers and forty-seven from their fathers. 



Phillips gives the history of two hundred and 

 sixty-four cases of insanity, from which we learn 

 that, of one hundred and seventeen males, sixty-four 

 inherited the disease from their fathers and fifty-three 

 from their mothers ; of one hundred and forty-seven 

 females, eighty inherited the disease from their moth- 

 ers and sixty-seven from their fathers. 1 



The peculiar horny excrescence on the skin of the 

 porcupine-men (Lambert family), that was transmitted 

 for several generations, was limited to the males of the 

 family. 3 



The following case is reported by Dr. Stewart : " A 

 single man aged twenty-four years, and the eldest son 

 of a family consisting of two sons and two daughters, 

 has well-marked pityriasis versicolor (a disease of the 

 skin) affecting his chest, back, and arms, and which 

 was first observed when he was about fourteen years 

 of age ; his brother, twenty years of age, now has 



Royal Agricultural Society, vol. xvi., pp. 21-35; Ribot on "Heredity," 

 p. 2 ; Darwin's " Animals and Plants under Domestication," vol. ii., 

 p. 93. 



1 Journal of the Royal Agricultural Society, vol. xvi., pp. 21, 35. 



2 British and Foreign Medico- Chirurgical Review, April, 1861, p. 

 246. 



