EXPLANATION. 



^Ar&6 infested ln/89£ 



WELLESLEY. 



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Vl^ORFOLK,' /SHARON \sTOU&hton| avqn >r-mN(.TOH\ \H/<N0VER \riARSHFlClD 



Fig. 9. — Area infested in Massachusetts in 1S99. 

 (From Report Massachusetts State Board of Agrictcitu) c.) 



