32 



2|- miles S.S.E. of the Cliurch in a pit of some size disclosing 

 the following series : 



Boulder Clay 10 feet. 



Lenticular patch of brown sand 6 „ 



Grey and variegated loam (with flint pebbles) probably 



due to the reconstruction of Reading Beds 6 „ 



In a gravel pit half a mile S.W. of Haverhill the thin edge 

 of the Boulder Clay is seen overlying six feet of coarse gravel with 

 large boulders, being in fact part of a boss of gravel which here 

 protrudes through the surrounding Boulder Clay. 



North-west of Haverhill there is gravel and sand in the 

 valley, but these are probably river deposits, as the clay is found 

 to come close down to the stream in many places. 



Following the line of railway, Boulder Clay is seen near 

 Withersfield Station, and the long cutting near Horseheath 

 Green exposes about forty-five feet of grey clay enclosing some 

 large boulders of Chalk and other rocks, A well made here by 

 the contractors showed its total thickness to be 120 feet. This 

 clay covers all the country northward round Horseheath, 

 Withersfield and West Wickham, but the highest hills of this 

 district are not more than 840 to 360 feet high. The boundary 

 of the clay is continued from the point where we left it, near 

 Horseheath along the S.E. flank of the open valley, which here 

 runs up into the hills and in which the Chalk is exposed for a 

 considerable distance. Crossing this hollow however and ascend- 

 ing the high ground upon which Balsham Wood is situate, we 

 again find Boulder Clay covering the surface, and extending as 

 an irregular patch in every direction round the village of 

 Balsham, which thus occupies a central position at a height of 

 about 370 feet above the sea. 



Walking southwards we find the high ground covered by 

 Boulder Clay through Yole Farm, Borley Wood and Short 

 Wood ; here it would appear to be rather thin, but Barrington 

 Hill on the West again brings in a great thickness of it, and 

 thence it runs westward down the slope towards Hildershani, 

 where its level must be at least 200 feet lower than that of the 

 Balsham and Barrington Hills ; before the deposition of the 



