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 SECOND PLACE. 



Depth of the 



sample, in 



meters -f- A. P. 



Sort 

 A. 



Sort 

 B. 



Sort 

 C. 



Sort 

 D. 



THIRD PLACE. 



These lists show that indeed in the higher parts of the sand bed 

 are more small grains and fewer large grains. So the question is 

 decided in favour of 1 lie sand b. 



It occurs to me that we may accept : 



1 st . that the groove originally was the lied of an old branch of 

 the Meuse. However this river did nol wash away sand from the banks. 



2 nd . that afterwards the groove has been tilled up with sand A. 

 As I remarked already, this specific is not at all universal, but can 

 only give an indication in some cases. 



Finally a remark. The glacial sheet being retired the glacial 

 period ends for our country. Meanwhile we know that afterwards 

 another approach of the glacier came, which did not reach our 

 country. As Dr. van Cappelle remarked already, interglacial deposits 

 must exist in our country. We do not know however deposits with 

 an arctic fauna and so the points of comparison fail to divide our 

 postglacial diluvium. Therefore we cannot give a further deter- 

 mination of the age for the deposits between our gravelous diluvium 



