546 Report or THE HorricuLTuRIst OF THE 
Mary Favorite, Mathilde, Metternich, Monroe, Opal, Poughkeep- 
sie, Profitable, Rochester, Senasqua, Shelby, Telegraph, Winchell. 
In the lists of grapes which give somewhat loose though mar- 
ketable clusters, when self-fertilized, and of those which give clus- 
ters too loose to be called marketable, certain varieties have given 
somewhat variable results in different tests, in some instances 
showing as great variation as in any of the cases cited above. 
It has been shown on preceding pages that in certain varieties 
the degree of self-fertility is not unchangeable. Its limits, there- 
fore, may not be defined with mathematical exactness, yet with 
rare exceptions its variableness in any variety is confined within 
rather narrow limits. Not all varieties have shown marked differ- 
ences in the results of different tests. In fact in the majority of 
cases the results have been practically similar with the same variety 
in different seasons and different locations, so far as tested. A 
classification based on such tests as have been reported above will 
show with considerable accuracy the normal degree of self-fertility 
of a variety, although the limits of the classes will necessarily 
be somewhat variable. Such a classification is given below. It 
is probable that slight changes may be made in it after further 
testing of these varicties. Other varieties may need to be trans- 
ferred from the lists of self-sterile to the list of imperfectly, self- 
fertile sorts as has already been done with Brighton, Lindley, 
Kumelan, Marion, Norwood and Woodruff. [or all cultural pur- 
poses, however, such grapes may: still be considered as belonging 
to the category of self-fertile sorts. Changes from one class to a 
widely different class, as from the self-sterile class to either of the 
classes of grapes capable of producing marketable self-fertilized 
clusters, are not to be expected. In other words, it is believed that 
the classification as given below is on the whole sufficiently reliable 
to serve the purposes of grape growers who are seeking information 
as to which varieties are able to produce good clusters of fruit 
when planted alone and with which ones cross-pollination is neces- 
sary to the production of good clusters. 
