20 FOX-STRANGWAYS : GLACIAL PHENOMENA NEAR YORK. 
arrangement of these mounds it is not possible to be sure of the 
exact sequence of events which brought about their structure. 
It is now many years since I had an opportunity of seeing these 
beds, but on reference to my notes I find that very few sections were 
to be seen in stiff boulder clay. In several places boulder clay was 
observed overlying gravels, but it was generally more or less of a 
morainic character, and frequently so nearly approaching a gravel 
that it was difficult to decide how it should be represented on the 
map. There is no evidence that the gravel in these mounds forms 
the crest of a ridge against which the boulder clay was banked ;" 
and consequently no necessity for supposing that the ice passed over 
the mounds. 
In conclusion let me observe that the idea, propounded by Prof. 
Lewis to explain the formation of the drift, of several glaciers 
emanating from the north and pushing over the country in a series 
of tongues, is that which best accounts for the phenomena to be 
observed throughout the county ; and that, in spite of the objec- 
tions that have been raised against it, there is no other theory that 
so nearly meets all the facts of the case. These objections it will be 
the duty of the present meeting to examine, and endeavour to find 
out how far the difficulties are capable of solution. 
Note. — Since the above went to press Mr. Kendall has inti- 
mated that I have misunderstood his views as to the relative age of 
these mounds, and that he particularly desired to avoid any expres- 
sion of opinion on the point. A perusal of Mr. Kendall's paper 
certainly gave me the impression that he was inclined to regard the 
York moraine as the older of the two, although he distinctly leaves 
the question open for further investigation. C. Fox-Strangways. 
