THE WATSONIA 93 



whiteness, as it may furnish the basis at any 

 time for variation that will introduce yellow 

 strains which stand a good chance of supplanting 

 the blue and white ones. 



Some further illustrations of the application 

 of this theory of the evolution of color in flowers 

 will appear in our subsequent studies. For the 

 rest, the reader who is interested in speculations 

 of this character will be able to make application 

 for himself, and to test the theory as to its details, 

 in particular if he enters the fascinating field of 

 plant development. 



Flowers offer the most inviting 

 field for the amateur, even while 

 they still hold their full attraction 

 for the practiced experimenter, 

 and one can hardly proceed far 

 with flower experiments tvithout 

 becoming interested in the 

 phenomena of color variation. 



