752 p. B. TAYLOR RICHMOND-GREAT HARRINGTON BOWLDER TRAINS 



There are also some amphibolite bowlders in this condition in the line 

 of the Eichmond train, for Benton says : "In a cnt on the Boston and 

 Albany Eailroad, three-quarters of a mile northeast of Eichmond station, 

 are completely rounded and polished bowlders, some of which have a 

 length of 4 or 5 feet. They are composed of limestone and of chlorite 

 schist, and a few exhibit well marked parallel striae/^ ^ That there was a 

 pre-Wisconsin ice invasion of this region is not open to doubt, for a 

 deep, indurated bed of bowldery till, plainly older than the Wisconsin, 

 is well exposed in the excavation for the new water power plant on the 

 Housatonic Eiver just below Glendale. The Great Barrington bowlders, 

 however, may not constitute a train of the same character as the Eich- 

 mond train. It seems probable that their immediate source was a great 

 weathered talus around Fryes Hill, and perhaps also from bowlder paved 

 river beds near it. It seems difficult to account otherwise for the rounded, 

 weathered condition of these bowlders. 



• Loc. clt, p. 25. 



