For nearly fifteen years the writer has been familiar with the subject of this paper. It has always appeared to me to be an aggressive weed and hence most undesirable for the farmer. During the last few years I have at various times received the weed from correspondents in this and other states, but during the past season the demands for information about this grass have been more frequent. It would therefore seem a public duty to describe and give an account of the weed so that farmers may better be able to cope with it. Farmers annually lose many millions of dollars because of the presence of noxious weeds in their fields, hence it would seem a part of our duty to inform the public as to how t® destroy them.

In former bulletins of the Experiment Station, this subject has been treated. The experiments reported show quite conclusively that these diseases can be prevented by treating with Bordeaux mixture. The experiments were however repeated because Mr. D. G. Fairchild* put the currant disease in the doubtful column of those to be treated.