On the Occurrence of Mammalian Remains near Purley. 283 
The character and mode of deposition of the valley gravels 
indicate the action of strong currents of water, such as might be 
produced from melting snows, and considering that the reindeer 
and the mammoth then inhabited this part of England, there 
seems ground for believing that there might be such an accumu- 
lation of snow and ice on the chalk plateau as to furnish by 
their melting sufficient transport force to carry down and along 
our valleys the coarse flints and boulders which occur in the 
gravels. There is no evidence of any glacial action in the valley 
gravels, for in no instance are the stones and boulders scratched 
or striated; at the same time it is quite possible that ice may 
have assisted in the removal of some of the larger blocks. 
The formation of the valleys and the gravels appears to have 
been carried out entirely by subaerial action; there is nothing 
to indicate any submergence and subsequent upheaval either 
during or since their formation, as suggested by Sir J. Prest- 
wich.* The local character of the gravels in our district has an 
important bearing on. this point, for they contain only those 
materials which are known to have been present within the 
Wandle drainage area before the valleys began to be excavated 
in the chalk plateau. ; 
133.—On tHE Occurrence or Mammatian Remains NEAR Porey. 
By N. F. Rosarrs, F.G.S8. 
(Read December 15th, 1896.) 
In July last my attention was called by my friend Mr. H. 
Reynolds to the presence of some mammalian remains in a - 
cutting being made upon the new railway running from Purley 
up the Chipstead valley to Banstead and Epsom. 
The cutting is situated on the south side of the Kenley valley, 
about three hundred yards from Purley station, where the new 
line diverges to the east of the Brighton line after passing the 
bridge across the road to Caterham. 
The level of the line is about 40 ft. above the bottom of 
Smitham Bottom, or about 260 ft. above Ordnance Datum. 
_ The accompanying diagram represents the section on the east 
side of the cutting as I saw it at the end of July. ; 
Commencing at the top of the section, we have— 
1. Humus, 1 ft. 
_ 2. Brick earth with unrolled flints and fragments of chalk, 6 ft. 
* «Quart. Journ. Geol. Soe.,’ vol. xlviii., 1892, p. 341. 
