XCVI 



BOWMAN LECTURE. 



But we meet with some in which the direct line of 

 transmission is without doubt interrupted by a healthy 

 generation (Figs. 36 and 37).* I say "without doubt " 

 advisedly, because the statement so often made by a 



subject of this disease, that his or her parents had 



perfect sight and were not related by blood, though 



usually correct, does certainly need revision in some 

 instances. 



* Figs. 37, 38 and 39, not previously published, are fully described in 

 Appendix IV. 



