A 253 - 
Indiana 
■lsconsin 
of greatest abundance of the aphis. This is the usual incubation 
period of the disease. "Te have experimentally dgaaonstrated the 
ability of the species to transmit tomato mosaic, and it therefore 
appears most probable that the great degree of disease spread in 
this instance may be definitely traced to the heavy infestation 
by this aphis. 
CJ S3A C-E 
EXPORTED CABBAGE 7QEH (Pier is rrpae L. ) 
J. J. Davis (July 23;:' Generally abundant 4 Reports received 
July 1 to 18 from all over the State. 
3. B. Fracker (July 10): A.t Oshkosh this insect -as attacking 
cabbage. Abundance as compared with an average year seems to 
be less. 
Utah 
New York 
Indiana 
Illinois 
Utah 
New York 
■asconsm 
George F. Khowlton (July 21): Cabbage rrorias are causing con- 
siderable damage in localities "There cabbage is not treated. 
G&BBiGE AFHID ( Brevi coryhe brassicae L. ) 
C. R. Crosby and assistants: The maturer plants in Nassau County 
sean to be able to withstand the attack of the lice very well but 
a. large number of the younger plants are receiving serious injury. 
In Erie County it is quite abundant in certain plantings. 
J. J. Davis (July 23): Abundant at Lao t to July 8 and at Richmond 
on July 16. 
\1. P. Flint (July 20): This insect is abundant, according to 
C. C. Compton, in the northern part of the State. In some cases 
severe damage to cabbage has already resulted. 
George F. Khorlton (July 2): The cabbage aphis is particularly 
numerous for this time of the year, and will probably be a serious 
pest this summer. (July 21 ): There is less damage from cabbage 
aphids than usual for this time of the year. 
CABEAGE :.AGGOT ( Hylsmyia brassicae Bouehe) 
C. R. Crosby and assistants: In VTayne County severe damage was 
done to early plantings. Injury very severe throughout Onondaga 
County, while in Konroe County this pest is causing a good deal 
of damage this season. 
S. B. Fracker (July 10): Torse than usual, especially in southern 
counties. Very abundant at liidison. 
