148 Professor Hughes, The Gravels of Hast Anglia 
being often fossiliferous, were more easily grouped in chronological 
succession. 
Of the newest age were the gravels of Jesus College, Little | 
Downham, &c. In an earlier stage he placed the gravels of | 
Barnwell, Stow, the Botanic Garden, Trumpington, Shelford, and 
the mammoth gravel of Chesterford, and to a still earlier stage he 
referred the Girton and Observatory gravels and those of the 
Newmarket Road. 
The Barrington beds must be considered by themselves, being 
very different in composition, situation and fossil contents. 
