INVESTIGATIONS OF POTATO WART. 7 
Table 1. — R> action of American and European potato varieties to potato wart — Contd. 
Group and variety. 
Source of seed. 
Years ! Tests 
tested. made. 
Wart re- 
action. 
Group V.— Early Ohio: 
Early Ohio 
Late Ohio 
White Ohio 
Group VI.— Hebron: 
Aroostook Pride 4 
Beauty of Hebron 
Country Gentleman s 
Early Beauty of Hebron. 
Early Bovee 
New Green * 
C. F. Clark, Greeley, Colo 
Joseph Harris, Coldwater, N. Y. 
C. F. Clark, Greeley, Colo 
do 
Selden McGlauflin, Presque Isle, Me.. ; 
. Beckert's Seed Store, Pittsburgh, 
.| Robert Buist Co., Philadelphia, Pi 
Pa. 
Group VII.— Burbank: 
Burbank 
California Russet — 
Imperial Burbank*. 
Netted Gem 
Russet Burbank . 
White Burbank «. 
Group VIII.— Green Mountain: 
American Giant "' 
American Giant 8 
Bountiful 
Carman No. 1 
Delaware 
Empire State. 
Gold Coin 
Green Mountain 
Green Mountain Junior. 
Green Mountain CGero strain) 
Gurney's White Harvest 
Idaho Rural 
McGregor. . 
McKinley.. 
New Itaska. 
Norcross 
State of Maine. 
Do 
Do* 
Vermont Gold Coin 
Group IX.— Rural: 
Bruce* 
Barnes Seedling. 
Carman No. 3. .. 
Early Surprise * 
Fairbault Mammoth Prize. 
Golden Rule * 
Golden Rural 
Golden Russet* 
Beckert's Seed Store, Pittsburgh, Pa.. 
Pennsylvania Department of Agricul- 
ture! 
L. A. Hawkins, Middle River, Calif... 
Low S. Darling, Petoskey, Mich 
Pennsylvania Department of Agricul- 
ture. 
William Wagner, Jerome, Idaho 
Colorado Seed Co., Denver, Colo 
California Seed Co., San Francisco, 
Calif. 
J. Boleiano, Baltimore, Md 
H. F. Michel, Philadelphia, Pa 
Cordon Bros. Seed Co., Rockford, 111.. 
August Mongrain, St. Luce, Province 
of Quebec. 
Central Maine Potato Co 
Field Laboratory, Prince Edward 
Island. 
I. D. Adams, South Royalton, Vt 
Several sources 
Johnson Seed Potato Co., Richmond, 
Me. 
Heath's Late Surprise *. 
Gurnev Seed & Nursery Co., Yankton, 
S. Dak. 
Pennsylvania Department of Agricul- 
ture. 
Inland Seed Co., Spokane, Wash 
W. W. Barnard Co., Chicago, 111 
Farmers' Seed & Nursery Co., Fari- 
bault, Minn. 
CO. Hoose, Duane, N. Y., and others. 
Jean Carton Gray, Van Buren, Me. . . . 
Robert Buist, Philadelphia, Pa 
Pennsylvania Department of Agricul- 
ture. 
Beckert's Seed Store, Pittsburgh, Pa.. 
Pennsylvania Department of Agricul- 
ture. 
....do 
A . N . Newman, Phelps, N . Y 
Pennsylvania Department of Agricul- 
ture. 
Farmers' Seed A: Nursery Co., Fari- 
bault, Minn. 
A. J. Derlith, Lincoln Park, N. Y 
Joseph Harris, Coldwater, N . Y 
Pennsylvania Department of Agricul- 
ture. 
....do 
1 
+ 
1 
+ 
1 
+ + 
1 
+ 
1 
+ 
2 
+ 
2 
+ 
1 
± 
1 
+ + 
2 

1 
+ 
1 
?0 
1 
+ 
1 

1 
± 
1 
+ 
2 

1 
?0 
1 
+ 
3 

2 
++ 
3 

> 

3 

2 
± 
1 
+ 
2 

2 

3 

1 
+ 
> 

2 
+ 
1 

1 

+ + 
+ 4- 
+ + 
+ + 
++ 
4 This is the local name for a stock that is in all respects Beauty of Hebron. It is not the Aroostook 
Prize belonging to section 2 of Group VIII. which is practically identical with American Giant and Jersey 
Giant; nor is it referable to Aroostook Pride, which is a true Green Mountain type. 
5 In the previous report (Lyman, G. R., and others. Op. cit.) this variety was referred to the Hebron 
group and is therefore so retained, but it is likely that Country Gentleman more properly belongs in sec- 
tion 2 of the Green Mountain group. 
6 Infected tubers somewhat on" type and probably American Giant. 
i American Giant is a type of the colored-sprout section of the Green Mountain group. Belonging to 
this same section are Jersey Giant and Aroostook Prize, identical wiili the tirst named. Idaho Rural, Charles 
Downing, and probably Cordner. 
s This variety is now considered to be Burbank. which often occurs as a mixture with Amen, an Giant. 
SchafTnit (Versuche zur Bekilmpfung des KartorreBrrebses im lahr 1918 19. In Ztschr. Pflaneenkrsnk., 
Bd. 30, p. o9-f>7. 1920) reports "Amerikanische Eiesen" as immune. 
• Rural type with heavv vines and late-growing habit. 
