370 REporRT OF THE HoRTICULTURAL DEPARTMENT OF THE 
proved very nearly or quite self-sterile. They are Black Eagle, 
Brighton, Eldorado, Herbert, Lindley, Merrimack and Salem. 
The results of applying the self-sterile pollen obtained from, 
these varieties to the stigmas of castrated self-fertile kinds are 
summarized in Table II. For better understanding of the 
tabulated results, the following facts relative to the degree of 
self-fertility of certain varieties should be noted. 
In most cases Brighton clusters utterly fail to develop fruit 
except when cross-pollinated. In rare instances self-pollinated 
clusters have produced a little fruit. The fruit thus produced 
is generally small and seedless, as illustrated in Bulletin No. 
157, Plate III, Fig. 1, and in the Annual Report of the Station 
for 1898, Plate LI, Fig. 1. 
With one exception, all clusters of Lindley which we have 
tested for self-fertility have been completely self-sterile. The 
single exception, consisting of one cluster which bore four ber- 
ries, falls within the limits of error in testing self-fertility. 
Lindley, therefore, may be called practically self-sterile, if not 
absolutely so. 
Merrimack pollen was applied to some castrated blossoms of 
Gillet red seedling, while other castrated blossoms of the same 
kind were not hand pollinated at all. In both cases some fruit 
was produced, and therefore it is not certain that the Merri- 
mack pollen was potent. See Table I and Table IT. 
Vergennes must be classed among the imperfectly self-fertile 
varieties, but yet it is sufficiently self-fertile to sometimes pro- 
duce marketable clusters when self-pollinated only. In many 
cases, however, its clusters of self-fertilized fruit are too loose 
and unsymmetrical to be marketable. The influence of the con- 
dition of the vine, location of the vineyard and character of the 
season on the development of the self-pollinated clusters is not 
well understood; but it has been observed that in the same vine- 
yards in some seasons the self-pollinated Vergennes clusters 
have been better developed than in others; also in the same 
season better self-pollinated clusters have been obtained in one 
vineyard than in others. 
1The Gillett red seedling is an unnamed seedling growing in Mr. Gillett’s vireyard. 
