TERMINAL MORAINES. 207 



which we have described as running through Cape Cod, 

 Elizabeth Islands, the southern portion of Rhode Island, and 

 the northern part of Long Island, and also with those to be 

 described more particularly hereafter as the Kettle Range, 

 in Wisconsin. This interior line he would designate " the ter- 

 minal moraine of the second Glacial epoch." But, in order to 

 avoid the assumption of a distinct second Glacial epoch before 

 conclusive proof is presented, the happy phrase of Professor 

 Cook, of New Jersey, seems preferable, who would call the 

 marked accumulations in the region to the north of the gla- 

 cial limit "moraines of retrocession." Still, there is no great 

 impropriety in calling them simply terminal moraines, since, 

 wherever the ice-front paused for any length of time, a spe- 

 cial accumulation of debris would take place, and would be 

 terminal to the ice at that point. 



West of the Alleghanies, President Chamberlin deline- 

 ates this moraine as extending in a series of lobes pointing to 

 the south across the States of Ohio and Indiana, making one 

 grand loop whose axis is nearly parallel with that of Lake 

 Erie, returning with its western arm into eastern Michigan, 

 between Saginaw Bay and the southern end of Lake Huron. 

 He discovers five minor loops in this moraine in the axes of 

 the following river valleys : (1) the Grand and Mahoning ; 

 (2) the Sandusky and Scioto ; (3) the Great Miami — all in 

 Ohio ; (4) the White, in Indiana ; and (5) the Maumee and 

 Wabash. But the accumulations called terminal in this re- 

 gion are by no means comparable in extent with those south 

 of New England or west of Lake Michigan, and the system 

 is made out with some difficulty. 



In this portion of the territory there is another interior 

 morainic belt of such interest that we pause to describe it 

 more particularly. We refer to that of the Maumee Val- 

 ley in Ohio, and can best describe it in the words of Mr. 

 G. K. Gilbert, its original discoverer: 



The Maumee River occupies the axis of the broad, shallow 

 valley which it helps to drain. This valley has no strongly 



