82 G. H. SQUIER 



raised as to their synchronism with the successive phases or 

 epochs of the glacial period. 



Before this can be answered other than conjecturally it will 

 be necessary to correlate them with the succession of non- 

 glacial deposits filling the larger valleys of the driftless region, 

 a work of considerable difficulty. 



G. H. Squier. 



