198 



AMERICAN VINES. 



SCALE OF RESISTANCE TO PHYLLOXERA continued. 



Berlandieri X Rupestris 



No. 1 12 



Berlandieri X Rupestris 



No. 2 16 



Berlandieri X Manticola No. 1 14 



No. 6 15 



No. 8 10 



Cordifolia X Rupestris de Gras- 



set No. 1 . . . . 18 



Cinerea X Rupestris (Munson) 16 



Triumph . . . . . . 4 



Senasqua . . . . . . 5 



Black Defiance . . . . 5 



Agawarn . . . . . . 6 



Irwing . . . . . . 5 



Black Eagle . . . . . . 3 



Eumelan . . . . . . 3 



Delaware white . . . . 3 



Delaware grey . . . . 3 



Croton 3 



Duchess 2 



Beauty 3 



Alvey . . . . . . 7 



Jacquez . . . . 12 



Saint-Sauveur . . . . 3 



Jacquez d'Aurelle No. 1 . . 9 



Jacquez, with large berries 11 



Herbemont . . . . 12 



Harwood . . . . 10 



Herbemont d'Aurelle . . 3 



Herbemont Touzan . . 12 



Black July . . . . 11 



Blue Favorite . . . . 9 



Cunningham . . . . 12 



Rulander V. . . . . 2 



Othello 6 



Canada iSSX - ;M 4 



Brandt -J. ..' .. 4 



Cornucopia .. .. i S3 4 



Secretary .. ..','. -,v<V 2 



Autuchon .. %HH <-* ^ 



In grouping the principal and best known varieties we 

 arrive at the following table, showing their scale of resist- 

 ance, the maximum being 20: 



No. 20. Absolute immunity (?). 



No. 19. V. Rotundifolia. 



No. 18. V. Riparia, V. Rupestris, V. Cordifolia, 



Riparia X Rupestris, Cordifolia X Riparia, 



Cordifolia X Rupestris. 



