BOWMAN LECTURE. CLIII 



glaucoma at 13 ; second wife (I, 3) childless. This case also shows coin- 

 cidence of high myopia and glaucoma in II, 4 



Fig. 33 (Lawford, Case 15, Mules, O.R., ii, p. 48, 1883) : I, 1 glaucoma 



I > 



iil. * 7 T i4. " 



simplex at 49 ; II, 1 the same at 18 ; II, 2 at 16 : II, 3 at 15 had increased 

 tension, but no other signs. 



Fig. 34 (Lawford, Case 24; Jacobson,A/.0., 1886, iii, p. 96) : 1, 1 glaucoma 

 simplex at 70 ; II, 1 at 45, and II, 2 at 40. 



APPENDIX IV. 



RETINITIS PIGMENTOSA. 



The principal pedigrees upon which I base what is said at p. xcv et seq. 

 of the text as to continuous and discontinuous descent in different families 

 may be found in R.L.O..H., xvii, pp. 7-17 and 360 for continuous descent, 

 and at pp. 18-24 and 26-31 for discontinuous descent. I have gone over 

 these again carefully, and find no errors except that in Fig. 33 Gen. I 

 should be omitted, there being no information. 



Discontinuous descent of retinitis pigmentosa side by side with con- 

 tinuous descent of lamellar cataract is shown in a pedigree published in 

 T.O.S., xxviii, p. 226 (1908). In the text of the lecture the two parts of 

 this genealogy were treated separately, the part containing the cataract 

 cases being shown in Fig. 12, and that containing retinitis pigmentosa 

 in Fig. 36. 



The details of the cases shown by Figs. 37, 38, and 39 are as follows : 



Fig. 37 (p. xcvi), sent by Mr. C. H. Usher (Ro wand family), 1909. 

 I, 3 was invalided from the Army as a young man for ' moon-blindness," 

 and was told it would get worse ; could see well in the day, but not 

 in the evening ; got steadily worse, was quite blind at 50, and died at 70. 



I, 1, 2, and 4 all good sight. II, 1 and 5 both good sight. Ill, 8, oet. 

 36 years, typical advanced retinitis pigmentosa ; has one child with good 

 sight (IV, 4). Ill, 7, set. 38 years, conditions much like III, 8; hearing 

 very quick ; has four sons, all living, and one daughter, who died lately, 

 all with good vision (IV, 2 and 3). Ill, 9, set. 34 years, conditions as in 

 the other two ; married fourteen years, no issue. Ill, 12, set. 50 years, 

 nearly blind of retinitis pigmentosa, a drinker, and has been under care 

 for delirium tremens ; twice married ; no issue by first wife, but by 



7 



