30 
DILUVIAL DEPOSITS. 
compared with the chalk on which it reposes, is 
referable to the period when elephants lived in 
our climate, and were contemporary with the horse 
and the deer. 
BRIGHTON CLIFFS. 
Brighton Cliffs, from Kemp Town, looking towards Rottingdean. 
The diagram in p. 3 1 . explains its geological structure. 
The town of Brighton is situated on an immense 
accumulation of water-worn materials, which fills 
up a valley, or hollow, in the chalk. This diluvial 
deposit is bounded on the north-west by the South 
Downs ; on the east it extends to Rottingdean, 
and is there terminated by the chalk ; on the west 
it may be traced more or less distinctly to Bignor ; 
on the south it is washed by the sea, and forms a 
line of cliffs from 70 to 80 feet high ; these exhibit 
a vertical section of the strata, and enable us to 
ascertain their nature and ])osition. 
