745 



West Virginia Station, Bulletin No. 12, December, 1890 (pp. 7). 



The Canada tiiiijitle, C. F. Millspaugh, M. D. (pp. 2G8-274, illus- 

 trated). — An illiKstratecl accoiiut of the Canada thistle {Cnicus arven- 

 sis), with sugf^estions as to means for its repression. The author states 

 that the true Canada thistle has not yet seriously invaded the State, 

 but that other weeds are often mistaken for it, among which are the 

 teasle {Bipsacus sylvestris), blue weed {Echium vulfjare), and Virginia 

 thistle {Cnious virginianus). A list of questions on weeds is also given, 

 addressed to farmers with a view to collecting material for a bulletin 

 on the weeds of the State. 



