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t (STATE AGRICULTURAL SOCIETY. 
useful and well adapted to our country. We hope to make this 
interchange of value to the agricultural interest of our State 
and country, and are satisfied the farmers will furnish us with 
all the facilities necessary to continue the exchanges. 
WHEAT MIDGE. 
Everything relating to this destructive insect is interesting 
at this time, when such serious ravages upon our crops are 
chronicled from our State and the Canadas. We give an extract 
from a letter from Dr. Fitch, Entomologist of the Society, in 
reference to a parasitical insect in England, which is not known 
in this country. The Doctor refers to his essay, published in 
the Transactions of the Society for 1845, page 255. He says : 
“ In that essay you will see I pronounced our insect to be 
identical with the cecidomyia tritica of Europe. When that 
publication reached Europe, one of the most eminent French 
Entomologists of the present day, C. B. Amyot, at a meeting of 
the Entomological Society of France, called attention to what I 
had written, decidedly dissenting from the correctness of my 
statement; that the insects of the two continents were one and 
the same species. It was several years before I became aware 
ot this—a letter which Mr. Amyot addressed to me having never 
coino to hand. I immediately'forwarded to Dr. Signovet speci¬ 
mens of the fly, to be handed to Mr. Amyot. He on receiving 
them called to his aid one of the best judges upon subjects of 
this kind in the city of Paris, and they gave these specimens a 
most scrupulous examination and comparison with European 
specimens. The result Mr. Amyot communicated in detail to the 
Entomological Society, at its next meeting, as I learn from their 
published proceedings. The specimens of the two continents 
were found to be identical in every minute particular which the 
microscope revealed, and Mr. Amyot gave his full assent to the 
correctness of my statement. As this insect continued to be so 
destructive to the wheat crop in this country, year after year, 
the question presented itself forcibly to my mind, why is it that 
this little creature is so vastly more injurious here than it is in 
Europe — why does it not multiply there and destroy wheat 
