124 
Journal of Agricultural Research 
Vol. XXI, No. 9 
Rock, Bonny Best, Mississippi Girl, Globe, Chalk's Early Jewel, Match¬ 
less, Favorite, Comet, Golden Queen, Acme, Perfection, Buckeye State, 
Earliana, June Pink, Ponderosa, Early Detroit, Improved Dwarf Cham¬ 
pion, Yellow Pear-shaped, Red Pear-shaped, Dwarf Yellow Prince, Yel¬ 
low Plum, Golden Ball, Yellow Peach, and Red Cherry. 
HISTORY AND OCCURRENCE 
This disease as it occurs on tomato fruit has been known for several 
years. Coons and Nelson (4, p. 48) and later Coons (j, p. 446) briefly 
describe this disease as tomato canker. Nelson first found the disease 
at the loading station at Milan, Tenn., in 1917, and later, in August of 
the same year, at the loading station at Anna, Ill. In the same vear 
he found it also at two points in Michigan, and in 1918 he noted the 
disease in community gardens at East Lansing, Mich. McCubbin 
( 9 t P • J 5 ) reports in 1918 what appears from his illustration to be bacterial 
spot from fields near Walkerville, Ont., and in 1919 Nelson noted the 
disease on Canada tomatoes on exhibition at a convention in Detroit. 
Specimens were received from Muscatine, Iowa, in 1918 by the senior 
author. 
Huelsen found bacterial spot prevalent in the Indiana canning crop 
near Indianapolis in 1918. In 1919 the disease was first found in an 
Indianapolis market garden August 10. It was found in a garden at 
LaFayette and in the canning crop about Frankfort and Indianapolis. 
It was first noticed in the canning crop August 14 and was reported 
August 16 by an Indianapolis grower as conspicuous on the green fruit. 
The disease became very conspicuous during late September. Leaf 
lesions were first recognized September 25. The disease was much 
worse in certain fields than in others. Observations were made about 
Paoli, Ind., and Grass Lake, Mich., but the disease was not found. 
1 he impression was gained that the disease was most prevalent in central 
Indiana, especially near Indianapolis. 
In May, 1920, bacterial spot was found in fields of tomato seedlings 
near Tifton, Ga., which were being grown for shipment to northern 
canners. In June, 1920, the disease was found in plant beds at Campbells- 
burg, Ind., by H. D. Brown. July 13, 1920, the disease was found very 
prevalent on the foliage in a field near Kokomo, Ind., which was planted 
with plants grown in Georgia. Link and Ramsay of the United States 
Bureau of Markets found bacterial spot very prevalent on tomatoes 
from Dania, Fla., during the spring of 1920. 
Careful search of the earlier literature has not revealed any unques¬ 
tionable records of the occurrence of this disease. 1 It is, of course, not to 
Smce tins manuscript was submitted for publication, a popular account of investigations on a tomato 
c»nker (Domes, E. M. a tomato cankbr. In Jour. Dept. Agr. Union So. Africa, v. i, no. 8, p. 718-72 r 
rilus. 1920) at Pretoria, Transvaal Colony, has appeared. Very evidently the disease studied by Miss 
Doidge which has been present there since 1914, is the bacterial spot of tomato. She has given an accurate 
description erf the symptoms on leaf, stem, and fruit and states that the yellow bacterium which causes the 
disease wiU be described elsewhere under the name Bacterium vesicatorium, n. sp. 
