1922] GARDNER & KENDRICK—TOMATO MOSAIC 479 
in six localities were examined in the summer of 1921. Of necessity 
much of this survey work was rather hastily performed. Included 
in this survey are 2 fields in Washington County visited June 29; 
13 fields in Johnson County, June 30; 21 fields in Howard and 
Tipton Counties, July 2; 4 fields on a large farm near Indianapolis, 
July 13; 11 fields in Hancock County, July 20; 25 fields in Marion 
County, July 21; and 5 fields in Grant County, September 17. 
The results may be summarized as follows: 
Ponate Heide Okara Cos. co, es on iss a 81 
Fields in which Physalis Was found... 005.3. 00-5 ok ks 65 
Fields in which mosaic on Physalis was found.................. 35 
Fields in which mosaic on tomatoes was found................. 60 
Fields in which Physalis and mosaic on tomatoes were found.... 48 
Fields in which mosaic on both Physalis and tomatoes was found 29 
The wide occurrence of Physalis is evidenced by its presence 
in 65 out of 81, or 80 per cent of the tomato fields examined. The 
prevalence of mosaic on Physalis is shown by its presence in 35 
out of 65, or 54 per cent of the fields in which the weeds were noted. 
The prevalence of tomato mosaic is shown by its occurrence in 60 
out of 81, or 74 per cent of the fields examined. Some correlation 
between tomato mosaic and the presence of Physalis is indicated by 
the fact that 48 out of 65, or 74 per cent of the fields containing 
Physalis showed tomato mosaic, and the fact that 48 out of 60, 
or 80 per cent of the fields showing tomato mosaic contained 
Physalis plants. Some degree of correlation between the occur- 
rence of mosaic on both Physalis and tomatoes is indicated by the 
presence of mosaic on tomatoes in 29 out of 35, or 83 per cent of 
the fields in which Physalis mosaic was found, and by the presence 
of mosaic Physalis plants in 29 out of 60, or 48 per cent of the 
fields in which tomato mosaic was found. 
PLANT-BED ORIGIN OF MOSAIC 
There were i lications in many of the fields examined 
that mosaic was transported to the field with the tomato trans- 
plants. In many of the fields in Johnson and Hancock counties, 
originally set out with tomato transplants imported from southern 
states, the heavy losses in stand due to the presence of Fusarium 
