PRODUCING A NEW COLOR 295 



California poppies of various other colors were 

 developed in the same way, but no blue shades 

 have ever appeared among them. 



In the case of these California poppies, then, 

 the relative ease with which the flowers were 

 changed from yellow to crimson would seem to 

 suggest that the latter color lies but slightly sub- 

 merged, if the expression be permitted, in the 

 hereditary stream, ready to come to the surface 

 if the thin overlaying current of yellow can be 

 removed. 



Another illustration of the linking of yellow 

 and crimson in the hereditary scheme of the 

 poppies is given by an experiment in which 

 I crossed two distinct species of poppy, one 

 having flowers of pale yellow, the other pure 

 white. 



The hybrids without exception bore flowers of 

 a clear crimson color. There was not a white one 

 nor a yellow one among them. 



Another interesting color modification in the 

 case of the poppy was that which produced the 

 so-called silver-lining poppy. In this case I dis- 

 covered a flower in which there was a white line 

 between the black center and the crimson part of 

 the petal. This line was widened by selection 

 until the petal was white with black center, the 

 white extending just over the outer edge of the 



