BOWMAN LECTURE. 



CLV 



sight like V, 5, but a vague history of defective sight in IV, 12 and 

 III, 10. Clear history of deafness from early life in II, 6, IV, 7 and 11, 

 V, 8 and 10 ; the deafness has varied in severity in the different persons, 

 very bad in II, 6 and IV, 11, moderate in the others. VI, 2 has had 

 attacks of mania ; her brother, a medical man, says she resembles her 

 aunt, V, 5, closely in some respects. VI, 6 died in infancy " from some 

 defect in the larynx/' and VI, 7, the two children of V, 8, also died in 

 infancy. IV, 7 and his wife, IV, 3 were second cousins, but the con- 

 sanguinity was from another stock in which there are no known cases 

 of blindness or deafness. 



APPENDIX V. 



NIGHT-BLINDNESS WITHOUT CHANGES. 



(a) The cases used, being all I have been able to find either in the 

 literature or amongst my own notes, are given in R.L.O.U., xvii, pp. 401 

 to 426, and there numbered Cases 151 to 190 (1908). 



(f>) Mr. W. J. Cant's case, Case and Fig. 44. Night-blindness without 

 visible changes affecting myopic males. 



In this small pedigree only three or four cases are known. Two of 



them have been seen and examined with care, and I therefore record the 

 case fully. 



I, 1 was a woman who lived to be 90 ; she became blind in her old age, 

 but there is nothing to show that she had night-blindness. 



She had at least one daughter, II, 1, but whether there were other 

 children is not known. II, 1 had three children, no more. 



