FEB2a'4Si iHGINIA POLYTECHNIC 1Kb. 



gsicultural branch libra; 

 ilacksburg, virginia 



Massachusetts 

 Agricultural Experiment Station 



Bulletin No. 343 May 1937 



yi *GUflA AGRICULTURAL BXPERIMWT STATION 



The Dutch Elm Disease 



A New Threat lo the Elm 



By Malcolm A. McKenzie and William B. Becker 



Although the Dutch elm disease has not been found in Massachu- 

 setts up to this time, nevertheless it constitutes a serious threat to the 

 future of the State's principal shade tree. This bulletin is intended 

 to supply basic information concerning the characteristics and spread 

 of the disease. 



MASSACHUSETTS STATE COLLEGE 

 AMHERST, MASS- 



