250 Non-I salable Races. 



above, which were made in the original locahty. Then 

 there are two curves for 1891. In this year I had a 

 ciikure of about four square meters from which I re- 

 moved, about the beginning of August all plants which 

 had not produced any pleiopetalous flowers as well as 

 those which had not yet bloomed. For two weeks I 

 counted every flower which appeared on the remaining 

 specimens. They amounted to 128 and the various de- 

 grees of the anomaly were distributed over them as 

 follows : 



Number of petals 5 6 7 8 9 10 11 12 13 



Number of flowers 45 24 28 17 8 4 1 1 



The curve E 1891 in Fig. 51 is based on these figures. 

 It is a half curve like the previous one, but without the 

 steep apex. The disappearance of this is due partly to 

 cultivation and to the repeated selection, but partly also 

 to the fact that the individuals with the smallest numljer 

 of pleiopetalous flowers had been removed before the 

 counting took place. 



After these data had been determined I carried out 

 a still further selection. Several plants had not produced 

 a single flower with more than seven petals. These were 

 removed in the middle of August and observations on 

 the rest were continued. There were 18 plants, all of 

 which were selected for seed-parents as being the best 

 representatives of the race. I counted all the flowers 

 which bloomed from August 15 to 31, and obtained the 

 following numbers '} 



Number of petals 5 6 7 8 9 10 11 12 13 14 

 Number of flowers 9 17 39 64 45 37 15 9 6 2 



* In the preliminary account of this experiment, mentioned 

 above, this series is given separately in two curves, one of which 

 refers to the most abnormal plant, the other to the rest. 



