300 Self-Sterility in Plums, Cherries, and Apples 



EXPLANATION OF FIGURES. 



Fig. 1. Jefferson. Tree was covered with flowers ; different branches were crossed with 

 pollen from Coe's Golden Drop, Coe's Violet, Crimson Drop, and Pond's Seedling. 

 No fruits set by the pollen of Coe's Golden Drop, or Crimson Drop, only two fruits 

 set by Coe's Violet, whereas a heavy crop set on the one branch pollinated with 

 Pond's Seedling — see lowest branch on right-hand side of figure. 



Fig. 2. Governor Wood. Tree in flower ; the flowers on one large branch (on left-hand 

 side of figure) were crossed with pollen from Early Rivers : the rest of the flowers 

 were self- pollinated. 



Fig. 3. Governor Wood. The same tree as in Fig. 2. No self-pollinated flowers set 

 fruit ; a good crop set by the pollen of Early Rivers. Note that this photograph was 

 taken from the opposite side of the tree so that the crossed branch shows on the 

 right-hand side of the figure. 



CAMBBIDGE: PBINTED by J, B. peace, M.A., at the UNIVEliSITTf PBESS 



