264 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [Feb. 7, 



All these materials have been swept off the northern slopes of the 

 chalk hills. The thickness of the accumulation is remarkable, as 

 also is the distance to which the materials have been carried for- 

 ward ; and may serve as a measure doth of the duration and in- 

 tensity of the Glacial Period. 



The great plain of flint shingle which may be observed about 

 Calais, and extending inland, belongs to the same level as that at 

 the base of the old cliff, and is probably of the same age. The beds 

 of chalk-marl which underlie the peat in the direction of St. Omer 

 are also of the age of the Loss of the Sangatte section ; and the 

 details of that section may be assumed with respect to the base of 

 the chalk range on the north, so far at least as the shingle extends. 



The character of the subaerial glaciation of the south slopes of the 

 Ardennes and axis of Artois is the same throughout ; and if the 

 phenomena are on a broader scale when they are in connexion with 

 the higher parts of the range, the history of the period is perhaps 

 more completely indicated in the Sangatte section. 



Pebruary 7, 1866. 



Thomas Belt, Esq., Prince of Wales Mine, Dolgelly; Thomas 

 John Bewick, Esq., Haydon Bridge; Thomas Eorster Brown, Esq., 

 H.M. Deputy Gaveller of the Forest of Dean, Coleford ; John E. 

 Campbell, Esq., of Islay, Neddry Lodge, Kensington ; William Cory, 

 Esq., 4 Gordon Place, W. ; Anastasius Gowdas, M.D., Athens; 

 Wilham Frederick Cowell Stepney, Esq., 9 Bolton Street, Piccadilly, 

 W. ; and John Young, M.D., Geological Survey of Great Britain, 

 Jermyn-street, S.W., were elected Fellows. 



The following communications were read : — 



1. On the Formation o/ Lake-basins in N'ew Zealand. 

 By W. T. Locke-Travers, Esq. 



[In a letter to Sir Charles LyeU, Bart., F.E.S., F.G.S.] 



In consequence of reading a notice in the 6th volume of the * Intel- 

 lectual Observer,' p. 461, of what I presume to have been a com- 

 munication from Dr. Haast to the Geological Society, in reference to 

 the formation of lake-basins in this country, and of my inabihty to 

 subscribe to the views of Dr. Haast, I venture to submit my reasons 

 for dissenting from them. 



My observations have been chiefly directed to the great mountain- 

 system named by me the " Spencer Mountains," which occupies the 

 centre of the block of country constituting the Provinces of Nelson 

 and Marlborough, in the Middle Island. The highest point of the 

 range is Mount Franklin, estimated at 10,000 feet, whilst around it 

 are several lower peaks, averaging from 7000 to 8000 feet. 



A number of the largest rivers in the northern part of the island 



