40 HETEROSTYLED DIMORPHIC PLANTS. CHAP. I. 



fertilised in the same manner, but no account of their 

 number was kept. The seeds, however, were carefully 

 counted and the averages are shown in the right-hand 

 column. The ratio for the number of seeds produced 

 by the two legitimate compared with the two illegiti- 

 mate unions is here 100 to 53, which is probably more 

 accurate than the foregoing one of 100 to 63. 



Hildebrand in the paper above referred to gives the 

 results of his experiments on the present species; and 

 these are shown in a condensed form in the accompany- 

 ing table : 



TABLE 11. 

 Primula Sinensis (from Hildebrand). 



Besides using for the illegitimate unions pollen 

 from a distinct plant of the same form, as was always 



