New Yorx Aeaiouttvrat Exereriment STATION. 645 
These lists contain in all the names of one hundred and sixteen 
grapes, twenty-seven of which are fully self-fertile; thirty-five 
are partly self-fertile, but are able to fruit satisfactorily of them- 
selves; seventeen are partly self-fertile and fruit unsatisfactorily 
of themselves ; fourteen have pollen self-irritant only, and twenty- 
three show no appreciable development of the ovary as a result 
of self-fertilization. 
For all practical purposes the varieties may fe placed in three 
groups. The first group, including Classes I and II, contains 
those kinds which are able to fruit satisfactorily when standing 
alone. Of the one hundred and sixteen varieties mentioned in 
_ the preceding lists sixty-two, or a little more than one-half, are 
able to fruit satisfactorily when standing alone. Everyone of 
these self-fertile varieties has long stamens. In this group are 
found among others the following well-known kinds: Agawam, 
Catawba, Clinton, Concord, Delaware, Diamond, Diana, Elvira, 
Hartford, Isabella, Moore’s Early, Niagara, Pocklington and Wor- 
den, and also Brilliant, Elvicand, Mills, Triumph and Winchell of 
the newer kinds. 
The second group, indentical with Class III in the preceding 
lists, contains those varieties which are able to set some fruit, 
but when standing alone yield clusters that are imperfect and 
unsatisfactory. This group includes among others Beagle, 
Canada, Duchess and Eumelan. 
The third group, including Classes IV and V, contains those 
varieties which when self-fertilized did not bring a single fruit 
to perfection. In it are found among other kinds Barry, Black 
Eagle, Brighton, Eldorado, Massasoit, Merrimack, Lindley, 
Salem and Wilder. Nearly all the varieties in this and the next 
preceding group are hybrids, but some are not. It will not do, 
however, to reason from this that hybrids can not bear fruit 
when self-fertilized, because two-thirds of the first group are 
hybrids. Neither are we prepared to ‘say that all cultivated 
varieties belonging purely to one species are able to fertilize 
themselves, since some few varieties that are not commonly 
thought to be hybrids can not fruit alone. 
‘Rarely have varieties with short stamens been found that are 
able to set any fruit of themselves, and even then the clusters are 
