BOWMAN LECTURE. 



CXLIII 



(E) Retiniti* Pigmentosa Discontinuous Descent, i. e. Parents 

 Normal; Both Sexes Affected. 



The above 22 cases contain 31 sibships available for the foregoing 

 tables. Thirty of these sibships may be classed into three groups, show- 

 ing respectively (c) almost every individual affected, (a) nearly one half, 

 (&) nearly one quarter. Only one, Fig. 36, Ilia, with 4 affected out of 11, 

 is widely inconsistent. 



