44 TJie Geology of Cambridgeshire 



sorted though little rolled. False bedding is the rule rather 

 than the exception, and the whole series bears evidence of 

 almost tumultuous accumulation. 



The most continuous line of these gravels is that followed 

 by the road from Westley Waterless by Six Mile Bottom, 

 Wilbraham, and Quy to the Barnwell railway bridge at 

 Cambridge. Joining into this at intervals are several ' tribu- 

 taries,' the most important of which is that from Balsham. 



A similar series of gravels caps the ridge which extends from 

 The Observatory to Girton, Oakington, Longstanton, Swavesey, 

 and Over, and again on the north side of the Ouse the line 

 may be further prolonged in the gravel-capped elevations 

 of Bluntisham, Colne, Somersham, Chatteris, Doddington, 

 Wimblington and March. Other less marked lines of gravel 

 come down from the hills about Newmarket, and those gravels 

 of the Heath country which do not belong to the 'Gravel 

 and Loam ' series probably belong to this set, as also do some 

 of the Lin valley gravels about Bartlow and Pampisford. 

 Fossils in the landward portions of these gravels are remark- 

 ably scarce. Bones of horse, hippopotamus, rhinoceros, and 

 Elephas antiquus have been found near Wadham Hall, and 

 Succineas and a few small land-shells may be seen in a gravel 

 pit near Little Wilbraham church. Palaeolithic implements 

 are recorded from various places but are very rare. 



The general character of the gravels is well shown in the 

 many gravel pits and cemeteries worked along the outcrop. 

 The most accessible are those along the Newmarket road 

 between Barnwell and Wilbraham, near Girton College, and 

 at Oakington. 



About Chatteris occasional marine shells have been 

 found in the gravels, and passing northward these become 

 more and more numerous until at March they are quite 

 abundant. Several small pits have been worked in the 

 neighbourhood of White Lion Lane, about half a mile west 

 of March, and several small sections are now open there. 

 These show some six to eight feet of shell-bearing and false- 



