New York Agricultural Experiment Station. 539 



when the blossoms were covered, there can be no doubt that self- 

 pollination occurs with all long-stamened varieties. Even with 

 short-stamened varieties it cannot be maintained that self-pollina- 

 tion is altogether prevented by covering the blossoms by the 

 method under consideration; for in these experiments some covered 

 clusters of short-stamened varieties have fruited sparingly. Fur- 

 ther discussion of pollination of the grape is reserved for a future 

 report. 



ENTIROEHENT MAY MODIFY- SELF-FERTILITY. 



The influence of environment on the self-fertility of the grape 

 has not received the attention which it deserves. In order to se- 

 cure some data on this subject varieties which had previously been 

 tested at the Station were tested again in other localities, 20 of 

 them in the vineyard of Mr. E. C. Gillett, Penn Yan, N. Y., and 

 15 in the vineyards of Mr. George O. Snow, near Branchpoint, 

 N. Y. Much credit is due these gentlemen for courtesies extended 

 to the Station and for their cordial cooperation in the work. 



Four of the varieties were tested in both these places and at the 

 Station so that tests with them were made in 3 localities the same 

 season. Eleven varieties were tested in 2 different localities simul- 

 taneously. The results of the tests in the different localities are 

 presented briefly in the following tabulation : 



