Ill l> 



YELLOW 



BLUE 



Fig. 



Fig. 8. 



Figure 7. Three color photograph of black and white wedges taken with 

 lens having the same chromatic aberration as the eye. The base of the 

 wedges which were about six feet distant, measured \ inch. 



Figure 8. Same as Figure 7 taken with a lens corrected for chromatic 

 aberration. 



