CLXXXII 



BOWMAN LECTURE. 



6 affected at 22 (1897), and still tinder Mr. Batten's care, set. 34 years. 

 Question of lead poisoning was raised, as at least three of the affected 

 brothers were plumbers, but there was no decided evidence of plumbism. 



1906. Case 174. Mr. C. H. Usher. Cases of Leber's disease in a 

 pedigree drawn up to illustrate albinism. (Forthcoming- Albinism 

 Memoir, Fig. 130.) 



Ill, 10 and II Leber's disease set in at about 30 ; age of onset in III, 12 

 not recorded. In IV, 4 Leber's disease present at 30, and in IV, 5 at 25. 

 In II, 6 sight failed in old age, and also in two of her brothers, but the 

 nature of the failure not known. I, 1 also said to have failed in sight as 

 an old man. The albinos were offspring of two mothers by same 

 father, the father (III, 12) having Leber's disease, the two mothers 

 almost certainly unrelated to each other. No consanguinity. 



1899.* Case 175. Buisson, These, No. 564. Paris, 1899. 



I, 2 good sight at 86 ; no information about 1, 3 and 4 ; II, 1 first wife 



I Tig. 176 



of II, 2 had only one child (III, 1), who in her turn had five normal 

 children (IV, 1) ; II, 3, second wife of II, 2, had five children (III, 2 to 6), 

 of whom III, 2 failed at 30 and was seen at 31 (aiithor's Case 2) ; and 



