274 Mr 0. Fisher, On a mammaliferous deposit at Barrington. 



then, as has been lately maintained, the earlier forms of worked 

 flints have been found beneath the chalky boulder clay, the conclu- 

 sion must be, that no change or improvement took place in the art 

 of flint knapping, during the enormous intervals in which that 

 boulder clay was deposited, and such valleys as that of Barrington 

 subsequently excavated. 



The mammaliferous deposits of Barrington have been dis- 

 covered since Mr Jukes-Browne published his Sedgwick Prize 

 Essay on the post-tertiary geology of Cambridgeshire, 1878. Had 

 they been known at that time, he would probably not have come 

 to the conclusion that the valley of the Rhee is of later date than 

 the other tributary valleys of the Cam *. 



* p. 67. 



