Fertilizing Self-Sterile Grapes. 47 



rating in each case follows the name of the variety): Aminia, 1.7; 

 Black Eagle, 0; Eldorado, 0; Herbert, 0; Lindley, 4; Meirimack, 

 8.8; Salem, 0; Wyoming, 12. Catawba has proved to be strongly 

 self-fertile in the tests of its self-fertility which I have made. It 

 was used to pollinate the following varieties, which are self-sterile 

 or nearly so (the average rating follows the name of the variety): 

 Aminia, 89; Brighton, 74.4 and 80; Eldorado, 0.5; Herbert, 100; 

 Lindley, 63; Merrimack, 91.7; Salem, 4; Wyoming, 100. Herbert 

 is self-sterile. When it was used to pollinate the self-sterile Eldo- 

 rado and Salem, no fruit was produced. When used on the nearly 

 self-sterile Brighton the average rating was 28. Lindley, so far 

 as tested, has proved self-sterile. It was used to pollinate the 

 following kinds, which are self-sterile, or nearly so (the average 

 rating in each case following the name): Brighton, 2; Eldorado, 

 0; Herbert, 0; Merrimack, 32; Salem, 0.4. Merrimack is self- 

 sterile. When used to pollinate the self-sterile Lindley, Herbert 

 and Salem, no fruit resulted. When used on the partly self-sterile 

 Brighton, all clusters but one failed to fruit, and that was well 

 filled. This test should be verified by further work. Niagara is 

 strongly self-sterile. It was used to pollinate the following varie- 

 ties, which are self-sterile, or nearly so (the average rating after 

 each name): Aminia, 80; Brighton, 85.7 and 52.5; Eldorado, 76; 

 Herbert, 98.8; Lindley, 77; Merrimack, 96.3; .Salem, 98. 



Without giving further particulars, it will be suflScient to say 

 that without other tests which were made the results in general 

 were similar to those which have been given. The use of self- 

 sterile, or practically self-sterile, grapes for fertilizers for other 

 self-sterile, or nearly self-sterile kinds, resulted in failure. When 

 varieties which are strongly self-sterile, like Catawba, Niagara 

 and Worden, were used to pollinate these self-sterile sorts, gener- 

 ally good clusters of grapes resulted. 



In conclusion, a word of caution as to the significance of the 

 average ratings which have been given in the above account of 

 these investigations. They cannot be taken as showing accurately 

 the ability of the variety to fertilize the other varieties upon which 



