ON EXTREME VARIATION 



flowers arranged in a satisfactory way on the stalk, 

 and a third race that produces flowers of a brilliant 

 white color, the materials are in hand for an 

 amplification of the experiment along lines with 

 which the reader is already familiar, through 

 which the desired combination of these traits in a 

 single race may be effected with almost absolute 

 certainty. 



THE COMBINATION OF QUALITIES 



The method in question consists, of course, in 

 cross-pollenizing the best individuals of the three 

 new races. Of course, one cannot blend three 

 strains in a single cross-pollenizing experiment. 

 But one can cross-pollenize specimens of each one 

 of the three with each of the others, making the 

 cross reciprocal in all cases to make quite sure. 

 Each of the new hybrid races will thus blend, in 

 one way or another, the traits of two of the parent 

 forms. 



Selection being made to find the best types 

 among these two crossbred races, the ones selected 

 will, of course, be inter-pollenized and their off- 

 spring, representing the second generation from 

 the three parent forms, will combine all the hered- 

 itary factors of their three specialized ancestors. 



Among these second generation hybrids there 

 will be found, in all probability if large numbers 

 of specimens are examined some individuals that 



