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1106 S^t^ji 



W03 



Figure 1. Map showing the gradual spread and distribution of the Brown- 

 Tail Moth in New Hampshire. Dotted area infested in 1906. Heavj- lines are 

 outer boundaries of areas infested in years indicated at margin. Dash lines 

 represent approximate boundaries not personallj^ investigated, based on 

 points infested north of them. Black circles show points examined in January, 

 1906, and found uninfested. Black squares show points examined in Decem- 

 ber, 1906, and found uninfested. Towns shaded with horizontal lines found 

 infested in December, 1906, and those underlined within 1906 boundary are 

 undoubtedly infested, though not personally' examined. 



