520 Report or THE HorricuLTurRIST OF THE 
with the European species which are found among the cultivated 
varieties. One hundred and sixty-nine cultivated varieties have 
been under test. The tests have mostly been made in Station vine- 
yards, but vineyards in two other localities have also been under 
investigation. In many cases the same variety has been tested in 
more than one season and in two or three localities, 
Reports of progress have appeared from time to time in the 
Station’s Annual Reports and in papers prepared by the author 
for horticultural or scientific societies.’ Since the circulation of 
the Annual Reports among the fruit growers is somewhat limited 
this account of the investigations 1s presented in bulletin form. 
It includes much that has not previously been published and is 
complete to date. ‘he work has been extended year by year till 
all the standard amateur and commercial varieties of this State, 
and also many new or little known varieties, have been tested. 
Previous to the undertaking of these investigations, but little 
was definitely known, concerning self-sterility among cultivated 
American grapes. The opinion had occasionally been advanced 
that with certain varieties, especially with some of the Rogers hy- 
brids, cross-pollination® was an advantage if not absolutely essential 
to the production of fruit. It had been observed that such varieties 
fruited imperfectly or were perhaps absolutely barren when standing 
alone, but gave much better results when they were located adja- 
cent to other kinds of grapes. Although these things had attracted 
the attention of a few careful observers they were not made the 
1 Kleventh Annual Rep. N. Y. Agrl. Exp. Station, 1892: 597-606. 
Thirteenth Annual Rep. N. Y. Agrl. Exp. Station, 1894: 636-648. 
Fourteenth Annual Rep. N. Y. Agrl. Exp. Station, 1895: 320-325. 
Notes on’ Self-pollination of the Grape. Rochester Meeting A. A. A. &., 
1892: Garden and Forest, 1892: 451, 452. 
Fertilization of Flowers in Orchard and Vineyard. Annual Meeting On- 
tario Fruit-Growers’ Assn., Orillia, Canada, 1894. 
Notes on Self-fertility of Cultivated Grapes. Boston Meeting S. P. A. S., 
1898: American Gardening, 19: 666 (1898). 
2The term “cross pollination” is used in this report to designate the con- 
veying to a pistil of pollen from another variety rather than from other vines 
of the same variety. 
