THE PROBLEM OF THE FUTURE I7 



five are defective. III. 6, male, mentally defective. 

 III. 7. male, alcoholic maniac. IV. 1-6, family of IV. 

 4 and 5, maternal first cousins, nothing being said to the 

 discredit of their own mental state. IV. i, male, dead, 

 shrunken congenital cataract, nystagmus, and hydro- 

 cephalus. IV. 2, female, squints. IV. 3, male, one of 

 twins, cataract and hydrocephalus. IV. 4, female, other 

 of twins fairly normal. IV. 5, female, died aet. three of 

 tubercular meningitis. IV. 6, male, cataract and hydro- 

 cephalus. See Plate I, Fig. 11 1. 



Again, we note twenty abnormals in four generations, 

 the product of two degenerates whose right to reproduce 

 their kind should have been challenged by man from 

 the start, as it would hd.ve been refused a priori by nature. 



In my next pedigree ^ we have a single blind man 

 leading in four generations to fifteen blind descendants : — 



W family. Form of cataract not stated. I. i, 



male, ' blind.' II. i and 2, males, issue of I. i, ' both 

 blind.' III. I, son of II. i, ' blind, he is known to have had 

 cataract. It is a fair presumption that the others (i.e. 

 his cousins), their fathers and their grandfather also had 

 cataract.' III. 2-4, issue of II. 2, ' all blind.' IV. 2-5, 

 issue of III. I. IV. 2, female, congenital cataract : 

 married, one child, affected. IV. 3, male, cataract at aet. 

 three ; no children. IV. 4, male, cataract at aet. two ; no 

 children. IV. 5, male, congenital cataract ; married. IV. 6, 

 blind, but no cataract (condition not stated) ; one child, 

 affected. V. i, male, child of IV. 2, cataract ous mother, 

 has congenital cataract. IV. 2, female, child of IV. 5, 

 cataractous father, and IV. 6, ' bhnd ' mother, has con- 

 genital cataract. No other details. See Plate I, Fig. iv. 



Here is another pedigree obtained by Mr. Bishop Har- 

 man^ illustrating a combination of degeneracies through 

 many generations : — 



I.I, died in an epileptic fit. II. i, died mad in an asylum. 

 II. 2, died mad in another asylum. II. 4 and 5 suffered 



' C. Loeb's case, Treasury of Hiirnaii Inheritance, Fig. 328. 



- Personally communicated and shortly to appear in the Treasury. 



D 



