484 PROCEEDINGS OF THE ACADEMY OF [1892. 



did not pass over South Mountain into the Triassic plain of Bucks 

 County. 5th, That below this moderate fringe there is no evidence 

 of direct glacial action, but every evidence against it, except possi- 

 bly at High Bridge and Pattenburg. 6th, The important thing to do 

 now is accurately to delineate the border of this fringe by the aid 

 of the easily recognizable transported foreign material. Since last 

 summer I have been able to determine the limit approximately 

 a few miles south of Draketown, near German Valley, about half 

 way between High Bridge and Dover. A few days' work would, I 

 am confident, determine the line entirely across the State. 7th, 

 The deposits mentioned by Professor Salisbury at Fallsington, in 

 Pennsylvania, and at Monmouth and Kingston, in New Jersey, 

 consist of material which has been distributed by the floods coming 

 down the Delaware River, while those at High Bridge and Patten- 

 burg possibly belong to the fringe, but more probably to move- 

 ments connected with the secular disintegration of the gneissoid 

 mountain core, at whose southern base they now lie. 8th, That the 

 facts do not lend support to the theory of a discontinuity between 

 the drift north of the moraine and that south of it. Instead of hold- 

 ing with Professor Salisbury that the drift under discussion has "not 

 had any genetic connection with the moraine, or any time relation 

 to it, except one of great separation" (N. J. Ann. Rep. for 1891, 

 p. 105), we should hold that it had both a genetic connection and a 

 moderately close time relation. It is not true that the extra-morainic 

 drift is, as Professor Salisbury says, " composed of materials which 

 are, in some measure, inherently unlike those which compose the 

 moraine." The drift material is essentially the same. The material 

 in it " inherently unlike those which compose the moraine, " comes 

 from the gneissoid rocks with which it is mingled, and which have 

 been undergoing disintegration for untold ages. The " advanced 

 stage " of " oxidation, leaching, disintegration," apparent at Little 

 York and the other places mentioned by Professor Salisbury, is 

 plainly due to preglacial, rather than to postglacial influences. We 

 cannot, therefore, with him hold "that this extra-morainic drift 

 represents the remnant of a drift-covering once more extensive and 

 more uniformly present than now, and that, ... it was formed 

 ... by an ice sheet which overspread New Jersey much earlier 

 than that which made the terminal moraine, and the main body of 

 drift which lies north of it." (N. J. Ann. Rep. for 1891, p. 105.) 



