HYBRIDS BETWEEN THE COMMON LILAC, &c. 305 
carry the pollen of a Varin Lilac to the flowers of the double Lilac. The 
attempt, renewed several years in succession, failed completely. I could 
never obtain a single seed of the Varin Lilac, and those which I got from 
the common Lilac had been fertilised, as experience subsequently proved, 
4 
ees 
Fic. 117.—SyrinGa puBrA, pers. (VARINA, ROTHOMAGENSIS) ‘ PRestpeNY Hayes.’ 
by pollen of the same species transported by insects. I knew that the 
Varin Lilac was generally considered sterile; I thus acquired the proof 
that its pollen was absolutely unfertile, while its pistil was equally 
x 
