52 



although it appears to be almost denuded of the deposit to 

 which it doubtless owes its existence as a feature, a small patch 

 of gravel still remains near Stanmoor Hall. Still further to the 

 north-east between Newton and Harston is Red-land Hill, capped 

 by the patch of gravel described by Warburton in Prof. Hail- 

 stone's paper on the Geology of Cambridgeshire (see p. 11). As 

 no exposure is now to be seen on the hill, I will quote Mr War- 

 burton's description, — he remarks " that three-fourths of the 

 rubbly mass" is composed of rounded pebbles of very hard 

 chalk ; that the gravel also contains " numerous angular masses 

 of striped flint, fragments of septaria, shelly limestones, and 

 angular pebbles of trap or greenstone," likewise some ochreous 

 balls which he looks upon as decomposed pyrites nodules, 

 together with derived Belemnites and Gryphsea shells. 



He notices the peculiar position occupied by this outlying 

 stratum, which looks, he says, " like the partial destruction of 

 an alluvial level by some subsequent cause." This small patch 

 may possibly be a remnant of the series we have been following, 

 or at any rate of some contemporaneous affluent, but beyond 

 this point all traces are lost, having probably been carried away 

 by the excessive denudation which this part of the valley has 

 undergone. Leaving therefore the question of the northward 

 continuation of this series in some doubt, we will now pass to 

 another system of drainage in which the deposits have been 

 much better preserved. 



Crossing the watershed of the hills above Hildersham with 

 their patches of clay and gravel, several deep and generally dry 

 valleys will be found proceeding from these and the Balsham 

 hills, and running in a northerly or north-westerly direction. 



In one of these at some gravel pits marked on the map a 

 littlg east of Gunners Hall, a curious section is exposed, viz. a 

 succession of finely -bedded loams, sands and gravels, mostly of a 

 yellow colour, and many of them false-bedded ; they are all bent 

 over into an anticlinal from N.W. to S.E., dipping very sharply 

 on each side ; this is best seen at the S.E. end, the north part 

 appears to be chiefly composed of yellow loam. The patch does 

 not seem to be of large extent, but is elongated in the direction 

 of the valley. 



Nothing is seen northward till the pits near Dungate are 



