CHAPTER IV. 



THE HILL gravels'. 



The Gravels overlying the Boulder Clay on Barrington Hill, 

 north of the village of Linton, have already been mentioned, and 

 their connection with those so long known as existing on the 

 summits of the Gog-Magog Hills has been pointed out. I will 

 now proceed to describe the position, extension and character of 

 these deposits, which have long been known by the name of the 

 Coarse Gravel of the Hills. 



The height of Barrington Hill may be taken as about 850 

 feet above the sea, and 250 above the stream below. As before 

 mentioned, it is capped with coarse flint gravel, which was 

 exposed in a small pit by the roadside just north of the letter R; 

 this was open in 1874, but has since been filled up ; it showed 

 about six feet of gravel, mainly consisting of large-sized flints 

 with pebbles and blocks of other rocks. Down the slope to the 

 N.W. Boulder Clay is found ; but in a road-cutting beyond and 

 about a mile due E. from Hildersham, sandy gravel is again 

 seen overlying the Clay. The same road crosses another patch 

 to the S.W., and this was formerly worked near the word Sand- 

 jnt on the map ; these patches are at a level of about 200 feet 

 above the sea. 



Westward of these another larger patch of gravel and sand 

 extends above Hildersham and descends as far as the old sand- 

 pit N. of the Church, having apparently overlapped the Boulder 

 Clay so as to rest on bare Chalk at a height of not more than 

 140 feet above the sea, and within 40 feet of the alluvium level. 

 North-west of this sand-pit, at the corner of the roads, is a 



1 These gi-avels are fully described in a Memoir written for the Geological 

 Survey, now in the press. 



