=1.= _Mag. Hort._, =27=:490. 1861. =2.= _Horticulturist_, =17=:94, 132, 518. 1862. _fig._ =3.= _Mag. Hort._, =28=:447, 540. 1862. =4.= _Am. Pom. Soc. Rpt._, =1862=:160. =5.= _U. S. D. A. Rpt._, =1863=:127. =6.= _Mag. Hort._, =30=:25, 62, 140, 150, 208. 1864. =7.= Mead, =1867=:164. =8.= Fuller, =1867=:216. =9.= Thomas, =1867=:399. =10.= _Am. Pom. Soc. Cat._, =1867=:44. =11.= _Grape Cult._, =1=:115. 1869. =12.= _Gar. Mon._, =16=:249. 1874. =13.= _Bush. Cat._, =1883=:67. =14.= _Am. Pom. Soc. Rpt._, =1883=:56. =15.= _Montreal Hort. Soc. Rpt._, =1885=:82. =16.= _N. Y. Sta. An. Rpt._, =10=:493. 1891. Adirondac is an old variety now nearly or quite obsolete. It is probably a seedling of Isabella which it greatly resembles in vine and fruit characters. It is of the Labrusca type, belonging to the southern group of this species, and like most of the southern Labruscas lacks in hardiness and vigor though it surpasses its parent in the first quality. The vine makes a slow, weak growth and is particularly susceptible to fungi. The quality of the fruit is very good, juicy and vinous, with the slight foxy flavor peculiar to Isabella. Its earliness, a week or ten days earlier than Concord, is one of its chief points of merit. The Adirondac did not attain favor because of the many faults of the vine and in the time of its cultivation was seldom found except in the vineyard of the amateur. The claim is often made for this variety that it is nearer the Black Hamburg in quality than any other American grape. Adirondac was first exhibited by J. W. Bailey of Plattsburg, New York, at the Montreal Horticultural Society Exhibition in Montreal in 1861. The original vine was found in 1852 by J. G. Witherbee in his garden a short distance from the shore of Lake Champlain in the town of Port Henry, Essex County, New York. The variety was introduced by Bailey. On account of its resemblance in vine to Isabella it is supposed by many to be a seedling of that variety. Adirondac was placed on the grape list of the American Pomological Society in 1867 and was dropped from it in 1883. Vine variable in vigor and productiveness, injured in severe winters, subject to attacks of mildew in unfavorable seasons. Foliage dark green, thick. Flowers semi-fertile, open in mid-season or earlier; stamens upright. Fruit variable in season of ripening, usually in edible condition about ten days before Delaware, does not always keep well. Clusters above medium to small, usually rather compact, seldom shouldered. Berries not uniform in size averaging below Concord, roundish to slightly oval on account of compactness of cluster, dark purplish-black, persistent. Skin intermediate in thickness. Flesh unusually tender and melting, sweet, mild, good to very good but with an after flavor which is not altogether agreeable. Seeds rather large, few in number. Must 82-1/2°-83°.