RIVER SYSTEMS OF NEW HAMPSHIRE. 



309 



Tributaries of Merrimack River Continued. 



The Contoocook river of this system is the largest tributary river in 

 New Hampshire. Its area of drainage on the south-east is narrow. 

 From the north-west side it receives Blackwater and Warner rivers in 

 Hopkinton, North Branch, near the north line of Antrim, and Nubanusit 



river at Peterborough. 



Androscoggin River System. 



The Androscoggin river is entitled to this name southward from the 

 confluence of the waters of the Magalloway and those of the range of 

 lakes at a point about one mile from Umbagog lake, and three miles 

 north-east from Errol dam. The area drained by this river in New 



