66 



Do^ible Petunias 



TABLE II. 



Showing a similar mixture of singles and doubles resulting from the imion 

 si^igle^ X double $, tvhere one or both of the individuals employed was 

 descended from a previous cross. 



Form of union 



Single 



seed-parent 



Double 



pollen-parent 



(single H X N) X double H 



(single H \ N)x double H 



(single H x N) x Self 

 (N X double H] 



(single H X N) 



double // 



double 7/ 

 (N^x double H) 



double H 



The total number of individuals belonging to the type forms used as seed-parents in 

 axperiments 1 — 41 was as follows : 



6 plants of Violacea 



7 ,, „ Nyctaginifiora 



5 ,, ,, Countess of Ellesmere 

 5 ,, „ Hybrida grandifiora 



Total 23 



