IN THE CORNWALLIS VALLEY. 69 



theory. Moreover, I think it supports the sand-bar theory, 

 because some of them have not an east-and-west axis, but 

 are at angles to this direction. 



The material of these bars is chiefly fine water-worn 

 sand, with some fine gravel. I examined the structure of 

 one, where a large quantity of sand had been removed. It 

 was well stratified, and this points to water-laid material, 

 when it is supported by rounded gravel and sand. A slight 

 trace of cross-bedding was also seen, which is characteristic 

 of sandy deposits. 



I also learned that the till lies below these sandy hills, 

 which proves that their age is Post-Glacial. 



These sand-bars are about ten miles in a northeasterly 

 direction from the sand-bar I described at Coldbrook, and I 

 believe they now stand on what was once the shore-line of 

 the North Mountain, when it stood as a long narrow island 

 on the Bay of Fundy. These bars are now situated about a 

 mile, perhaps a little less, from the base of the North Moun- 

 tain. They shew that shallow water, as well as strong cur- 

 rents, were the chief agents in their construction. 



No doubt these soft deposits have experienced consider- 

 able erosion since thej' have been exposed to the destructive 

 influence of the atmosphere, having both their size and 

 shape altered. Notwithstanding the wear that time has 

 imposed upon them, they still remain as monuments of 

 geological change, and tell the investigator that once the 

 sea dashed against the hills that lie to the north. 



