308 LUTHER BURBANK 



review the work done with certain other daisy- 

 like plants to which also reference was made in 

 an earlier volume with particular reference to 

 the interpretation of the results accomplished, in 

 the light of the new information supplied us by 

 observation of other series of experiments. 



First a few words as to the progress of the 

 Shasta daisy, which, as we have learned, not 

 only constitutes virtually a new species, but has 

 given rise to a great variety of modified forms, 

 all of them Shasta daisies, yet differing as 

 markedly among themselves (in form at least) 

 as, for example, different races of roses or 

 poppies or dahlias differ. 



The racial strains of the three original parent 

 species have been so recompounded, and, as re- 

 gards their broader outlines, so truly fixed in 

 the new species, that no one who sees a Shasta 

 daisy can fail to recognize it as a Shasta just as 

 we recognize a rose or a poppy or a dahlia even 

 though the particular specimen under observa- 

 tion differs very radically as to size and form 

 and arrangement of petals from any one of the 

 half dozen varieties that may be under observa- 

 tion at the same time. 



And the meaning of all this has been made 

 clear to us in our studies of other forms. The 

 separation of unit characters through hybridiz- 



