C. J. Bond 



109 



pigmentation in each ring was so marked as to make the right eye 

 appear dark brown and the left eye light yellow. 



In one Case 7 E. E. a yellow brown ring was associated with black 

 pigment in each eye most marked in the lower half of each iris. 



In Case 9 the spots were limited to the right eye. This man was 

 the father of the ray-duplex (Case 9). 



Ring and Spotted Patterns. 

 12 3 8 



(^ 



1. Colton. 2. Martin. 

 6. N. Harvey. 7. 



In one case B. C. No. 23 ray pattern, a duplex ring with irregular 

 black spots in the upper half of the left iris in the son, was associated 

 with a brown duplex ray in the outer half of the right iris. In the 

 mother (Case 22) the rest of the iris and the left eye being blue. 



Prevalence of the ring pattern. 



There were 14 ring pattern cases in 88 duplex individuals occurring 

 in the consecutive series of 200 cases of Dr Henry's clinic. 



Prevalence of the spotted pattern. 



In 26 individuals out of the 200 cases spots or patches of darker 

 pigment were present on a lighter duplex background and in a few 

 cases on a simplex background. 



Thus we see that out of 22 examples of a single ray only two were 

 above the horizontal pupillary equator, two were on the equator and 



