The Origin of Chrysanthemum Scyctnm Plenum. 179 
ing 21 rays in the terminal inflorescence, and as thus 
complying with the main condition for the new race. By 
means of the grouping of the figures for the offspring, 
that of one seed-parent (1895, No. 1 of page 175) was 
first proved to be far better than that of the five other 
parents. Then amongst this chosen group the individuals 
with the largest number of florets in their terminal heads 
were selected and amongst the best of these was found 
the one which gave the faint indication already described. 
CHRYSANTHEMUM SEGETUM GRANDIFLORUM. 
ANCESTORS OF THE DOUBLE RACE. 
1895 No. 1 21 
1896 No. Ic 21 
1897 34 13 
1898 48 14 
1899 66 f8 
1900 Maximum 101 35 
But small though this indication was, it sufficed to 
bring the latent character to light. All that was still ne- 
cessary \vas to carry the process of selection on through 
three years in the same direction and on similar prin- 
ciples. 
I chose only one seed-parent each year for the 
continuation of the experiment, isolated it together with 
some of the next best as early as possible, and harvested 
its seeds separately from those of its neighbors. Com- 
pletely isolated plants of Chrysanthemum segetnm usually 
set so little seed that it is impossible to rely on them, and 
therefore fertilization has to be effected to a certain ex- 
tent by inferior individuals. If this were not the case 
my object would most certainly have been reached earlier. 
