30 Congenital Night- Blindness 



Note: — The parentheses in both of the above quotations are my 

 own. 



6. Normal wife of C. D. Uzzell. 



7. Normal wife of E. B. Uzzell. 



8. E. B. Uzzell, aet. about 70, brother of C. D. U., is night-blind, 

 myopic and has suffered greatly with Pterygium. He was almost blind 

 a few months ago, according to his own statement, but has been partially 

 relieved by an operation. He writes that all of his children and those 

 of his sons are normal so far as night-blindness is concerned, but that 

 the sons of his daughters show a considerable percent, of night-blindness 

 and other defects of the eyes. He has five normal sons and two normal 

 daucjhters, both of whom have night-blind sons. 



9. Mrs N. Carson, dead, normal in vision. There is no known case 

 of night-blindness in her progeny. 



10. Mrs L. Boyle, living, normal, with normal progeny. 



11. William Uzzell, living, the only normal male of the childship. 

 None of his progeny or descendants exhibit night-blindness. 



IV, 1 — 16. Issue (minus the marriages) of III, 5 and 6. No other 

 pregnancies. 



1. First-born male child. Evidently died in infancy as no name 

 was given. 



2. H. W. Uzzell, dead, normal. Left no progeny. 



3. D. K. Uzzell, aet. 43, normal so far as night-blindness is con- 

 cerned, but his eyes "are in very bad condition from cataract" (Pterygium 

 is the diagnosis here). Three of his four living sons show symptoms of 

 Pterygium more or less advanced. His two daughters, now dead, were 

 normal. 



4. Normal wife of D. K. Uzzell. 



5. Mrs U. S. Brown, aet. 41, normal so far as night-blindness is 

 concerned, but has the most pronounced case of Pterygium among the 

 female members of the connection. She has had two male and five 

 female children. Both sons, one of whom is now dead, night-blind. 

 The daughters, two of whom are living, all normal. Miss E. L. Brown, 

 who has collaborated with the writer in this investigation, is V, 8, the 

 eldest child of Mrs U. S. Brown. 



6. Normal husband of Mrs U. S. Brown. 



7. Mrs Hobdy, aet. 39, normal. She has seven sons living, five of 

 whom are unquestionably night-blind and two are normal. No 

 Pterygium apparent. 



8. Normal husband of Mrs Hobdy. 



