CHAP. XVIII. REMARKABLE TRAINS OF ERRATIC BLOCKS. 357 



Fiff. 50. 







*;•« » 



€ 'f 





•V .'.*". 



A" t M 



^ \ ''" 









\, ''6, '°f^9 

 4. M'ii '•'••.• '•"', 



'^ m Bic/nnond Vallej/. •■ °o ''. "•# # 



MAP SHOWING THE RELATIVE POSITION AND DIRECTION OF SEVEN TRAINS 

 OF ERRATIC BLOCKS IN BERKSHIRE, MASSACHUSETTS, AND IN PART OF 

 THE STATE OF NEW YORK. 



Distance, in a straight line, between the mowitain-ranges A and c, about eiglit miles. 



A Canaan range, in the State of New York. The crest consists of green 

 chloritic rock. 



B Richmond range, the western division of which consists in Merriman's 

 Mount of the same green rock as A, but in a more schistose form, while the 

 eastern division is composed of slaty limestone. 



C The Lenox range, consisting in part of mica-schist, and in some districts of 

 crystalline limestone. 



d Knob in the range A, from which most of the train No. 6 is supposed to have 

 been derived. 



e Supposed starting-point of the train No. 5 in the range A. 



/ Hiatus of 175 yards, or space without blocks. 



g Sherman's House. 



h Perry's Peak. 



k Flat Rock. 



I Merriman's Mount. 



