58 NATURAL HISTORY AND TOPOGRAPHY OF GROTON, MASS. 



westerly for three or four miles into the Nashua River. At 

 its mouth is the beginning of the line separating the town 

 of Ayer from Groton. Formerly there was a tannery on the 

 banks of the brook, near Indian Hill, known as Dix's tan- 

 nery ; and a mile below, on land of the late Benjamin Moors, 

 east of the road, at one time there was a mill, — but now no 

 traces of either are left, beyond signs of the mill-site. It 

 empties into the Nashua River, nearly opposite to the mouth 

 of the Squannacook. 



Hawtree Brook — in the northerly part of the town, near 

 Chicopee Row; after it unites with Walnut Run and two 

 or three other small streams, it forms Unquetenassett Brook. 

 In the early records of the town the Hawtrees are frequently 

 spoken of, which refer to the neighborhood of this brook. 



Nod Brook — rises near the Soapstone Quarry,, crosses 

 the Nod road and runs into the Nashua River. 



NONACOICUS Brook — frequently contracted into Coicus 

 — was formerly a noted stream in Groton; but now no part 

 of it comes within the limits of the town. It has its source 

 in Harvard, and runs northerly and then westerly, passing 

 through the village of Ayer, and emptying into the Nashua. 

 It receives, as a tributary, Sandy Pond Brook. On this stream 

 John Prescott, about the year 1667, built his mill for grinding 

 and sawing, of which the site was originally in Groton, but 

 now is in Harvard. The neighborhood is still called the Old 

 Mill. 



Reedy Meadow Brook — rises in Reedy Meadow and 

 flows northerly, emptying into the Nashua River below East 

 Pepperell. It is sometimes called Johnson's Brook. 



Sandy Pond Brook — wholly in Ayer, the outlet of Sandy 

 Pond, flowing into Nonacoicus Brook. 



Sedge Brook — a small brook from Sedge Meadow, run- 

 ning into Reedy Meadow Brook. 



