128 Atavism. 



a beautiful typical plant with broad stripes but without 

 any broad patches on the corolla, and fertilized it with 

 its own pollen in a bag. In 1899 I raised from its seeds 

 about 250 plants, which covered a bed of about four 

 square meters, and nearly all of which flowered on the 

 main stem and on several lateral branches. There were 

 only a few finely striped individuals amongst them, 

 whereas the majority were very coarsely marked. But 

 the proportion of uniformly red plants was considerable: 



Striped individuals 160 64% 

 Red individuals 91 36 fo 



Total 251 



That is to say, about one-third of the olants had re- 

 verted to a uniform red color. 



The offspring of the almost yellow parents showed 

 the following distribution of the various types of colora- 

 tion (Bi — B4 refer to the individual seed-parents and to 

 the groups of offspring arising from them) : 



OFFSPRING OF THE YELLOW^ PARENTS. 



Stripes B^^ ^2 ^3 ^4 Totals 



Nearly absent 6 5 12 1 24 



Very fine 3 7 18 2 30 



Narrow 3 6 12 2 23 



1-2 mm broad 9 7 18 3 37 



1-3 mm broad 7 4 22 2 35 



1-5 mm broad 3 1 4 



1-6 mm broad 



Broad fields 



Uniform red 



Totals 28 29 85 11 153 



See Fig. 23A. 



These tables, and Fig. 23 which has been constructed 

 from them, show that two races have been produced by 

 the selection and self-fertilization of the extreme variants. 



