l8 NATURE AND NURTURE 



from epilepsy and, like father, died in fits. III. i, normal, 

 married a woman of epileptic ancestry and having herself 

 symptoms of it. III. 3-5, died without record. III. 6, died 

 mad at y], his eldest child mentally defective and youngest 

 has fits. III. 7, died of alcoholism, three children of whom 

 no record. III. 9, died of alcoholism. III. 10, 11, 12, 15, 

 and 16, epileptic, of whom III. 15 died in a fit. IV. 2, 

 osteoarthritis, heart disease, and dropsy. IV. 4, chronic ble- 

 pharitis. IV. 7, mentally defective, lamellar cataract, right 

 eye lost. IV. 8, died in a fit. IV. 10, died of pneumonia 

 at five weeks. IV. 12, severe convulsions. All IV. 1-12, 

 undersized and of poor intelligence. See Plate I, Fig. 11. 



Lastly, I would illustrate from a subject with regard to 

 which we have been able to obtain much data — Deaf- 

 mutism. I believe that congenital deaf-mutism might 

 be stopped in a generation. Yet what do we find ? Deaf- 

 mutes marrying deaf-mutes and reproducing their kind 

 with an astonishing fertility. Provision seems to be made 

 for these unfortunates in every way, and for every new 

 generation that is born of them. Examine the pedigree ^ 

 and you will see at once how this plague spreads. 



Families D+P + R. Nothing is known of I. i and 

 1.2; they had six children of whom three daughters, II. i, 

 were normal, but no statement was available with regard 

 to their descendants, if any. Another daughter, II. 2, 

 was a deaf-mute and died. II. 3, the son, was unmarried, 

 deaf-mute, and 'hopelessly diseased in face'. II. 4, 

 another deaf-mute daughter, married II. 5, also a deaf- 

 mute, the son of normal parents, I. 3 and I. 4, who had 

 other five normal offspring, II. 6. It is stated that II. 5 

 had no deaf-mute relatives. II. 4 and II. 5 had six 

 children. III. 1-4 ; III. i, deaf-mute, married III. 12, 

 deaf-mute, but there was no issue of this marriage. III. 2 

 had partial hearing, III. 3 was a deaf-mute, and the other 

 three children. III. 4, could all hear. I. 5 and I. 6 were 

 normal and were not known to have any deaf-mute 

 relatives. Two of their children were deaf-mutes, II. 8 

 and II. 9. II. 9, a mattress-maker and alcoholic, died 



^ Treasury of Human Inheritance, Fig. 273. 



