GLACIAL EROSIOX AXD T RAX SPORT ATIOX . 239 



of 8,000 tons. But both these must give place to one men- 

 tioned by Professor Edward Orton at Oregonia in Warren 

 County, Ohio, where a mass of Clinton limestone covering 

 three-quarters of an acre, and twenty feet in thickness, has 

 been moved by ice several miles and left with glacial deposits 

 both above and below it. These, however, are small compared 

 with a mass of chalk described by Professor Hoist near Malmo 

 in southern Sweden which is three miles long, one thousand 

 feet wide and from one hundred to two hundred feet in thick- 

 and which has been transported an indefinite distance 

 by glacial ice and left on the surface of ordinary deposits of 

 till. This mass is extensively quarried for commerical pur- 

 poses. The quarries show that the chalk, especially in its 

 upper portions is much disturbed, being broken into small 

 fragments. Even the flint nodules are generally cracked, 

 but the mass as a whole is well defined. A similar transported 

 mass of chalk is reported from the eastern shore of England 

 upon which a village had unwittingly been built. 



The train of bowlders in Richmond, Mass.. near the sum- 

 mit of the Berkshire Hills, was long ago described by Presi- 

 dent Hitchcock and Sir Charles Lyell, and more recently 

 and accurately by Mr. E. E. Benton. \ So much has been 

 written about this train of bowlders, that it is worth while to 

 give the results of this later investigation. The locality is in 

 the towns of Lebanon, N. Y., and Richmond, Lenox, and 

 Stockbridge. Mass., upon the western side of the Berkshire 

 Hills. The trend of the rocky strata here is nearly northeast 

 by southwest, and the elevation of summits of the ridges 

 about sixteen hundred feet above tide, the valleys being 

 about six hundred feet lower. Beginning on the Canaan and 

 Lebanon ridge in New York, there is a line of peculiar bowl- 



* " Geology of Xew York,'' Part IV, p. 165, et seq. 



+ "American Journal of Science," vol. cxxvi, 1883, p. 347. 



X Lvcir? " Antiquity of Man." pp. 355-362 ; " Bulletin of Museum of Com- 

 parative Zoology at Harvard College," Cambridge. Mass., vol. v, No. Ill, p. 41, 

 with map. 



