572 Curves of Compositae and Umhelliferae. 



many had 20 or 22, a few had 23 or 25. These were 

 all pulled up. There remained 6 plants with 16-19 rays; 

 their seed was harvested in autumn. 



In 1893 this experiment occupied 8 square meters. 

 I made a curve of the ray florets of 411 plants that were 

 raised on it. Eight plants with 13-15 florets were chosen 

 as seed-parents. 



Of these I chose the best three with 13-rayed terminal 

 inflorescences, sowed their seeds on 6 square meters and 

 obtained no more than 213 adult plants as a result of an 

 accident by which a number were lost. The variability 

 in the number of ray-florets of these plants is given in 

 the following table, together with those of the 1893 crop. 



MADIA ELEGANS. 



From which I have calculated the following values 



