Diana Hamburg was the first of Jacob Moore's productions, having been raised from seed of Diana fertilized by pollen of Black Hamburg about 1860. It was first exhibited at the New York Agricultural Society meeting in September, 1864. For a few years it attracted some attention but soon passed from cultivation. The following description is compiled from various sources: Vine vigorous when not diseased; canes short-jointed. Leaves of medium size, somewhat concave. Fruit-clusters large, compact, shouldered. Berries above medium, slightly oval, dark red, tender, free from pulp. Except in color, which shows a more reddish tinge, it very closely resembles Black Hamburg. The vine is tender and very susceptible to mildew. DON JUAN. (Vinifera, Labrusca.) =1.= _Horticulturist_, =29=:329. 1874. =2.= _Am. Pom. Soc. Rpt._, =1875=:114. =3.= _U. S. D. A. Rpt._, =1875=:386. =4.= _Bush. Cat._, =1883=:92. =5.= _W. N. Y. Hort. Soc. Rpt._, =36=:45. 1891. In spite of many good characters, as high quality, attractive appearance, and a vine above the average in vigor and hardiness, Don Juan has not become established in American viticulture. It has been tested by grape collectors for forty years and is now passing from even the collections. Its chief fault in this State is that it ripens too late. Don Juan was originated by J. H. Ricketts of Newburgh, New York, over thirty years ago from seed of Iona pollinated by General Marmora. The originator claimed that Don Juan was a better grape than its parent, Iona, but it has fallen far short of this in the vineyards of the State. The connection of the name with the grape is not apparent. Vine intermediate in vigor, appears hardy and productive. Canes short, rather brittle, slightly roughened; tendrils intermittent, bifid. Leaves medium to thin, not very large, light green. Fruit ripens rather late, keeps well. Clusters medium to large, rather broad, shouldered, strongly tapering, very loose. Berries large to medium, distinctly oval, dark red, covered with dark lilac or slightly blue bloom, strongly persistent, somewhat soft. Flesh tender and nearly melting, vinous, resembles Black Hamburg somewhat in flavor, good in quality. DOWNING. (Vinifera, Aestivalis, Labrusca.) =1.= _Am. Hort. An._, =1871=:79. =2.= _Am. Pom. Soc. Rpt._, =1875=:113. =3.= _Bush. Cat._, =1883=:92. =4.= _Gar. Mon._, =26=:366. 1884. =5.= _Am. Pom. Soc. Rpt._, =1885=:17. =6.= _Kan. Sta. Bul._, =28=:160. 1891. =7.= _N. Y. Sta. An. Rpt._, =11=:619. 1892. =8.= _Tenn. Sta. Bul._, Vol. =9=:176. 1896. =9.= _Mich. Sta. Bul._, =169=:169. 1899. =10.= _U. S. D. A. Yr. Bk._, =1901=:388. _col. pl._ CHAS. DOWNING (1). _Charles Downing_ (3, 10). RICKETTS' NO. 1 (2). _Ricketts' No. 1_ (10).