Proceedings. 7 
shells of H. aspersa, the common garden snail, are found in 
great abundance in Roman rubbish-pits at Chesterford and 
other places round Cambridge*, and other shells are found in 
Roman débris in Northamptonshire +, 2. pomatia does not occur 
in any Roman deposit so far as I can tind out. It would be 
strange if the Romans introduced a snail which they never 
used. 
I found specimens at the depths of 1 foot 9 inches, 2 feet, 
2 feet 3 inches, fragments at 2 feet 9 inches, 2 feet 6 inches, 
and a young pomatia at a depth of 3 feet 6 inches. As I found 
a neolith (an early type of Neolithic scraper) at a depth of 
2 feet 6 inches, and what is probably a core at a depth of 8 feet, 
I take it that the upper part, 2 feet 6 inches, is most likely the 
only part of the deposit formed since Roman times. 
It isan idea of mine that the deepest part (the 8-foot section) 
of the deposit (just above Mr. Taylor's water-boring) marks a 
section across the bed of an old trough which held back the 
water and was the old marshy ground in which such forms as 
Arion ater, Helicigona arbustorum, Vallonia pulchella, Pupa 
muscorum, Cochlicopa lubrica, all of which except H. arbustorum 
occur in such abundance through the section, and as far as my 
observations in Kent, Cambridgeshire, and Surrey are con- 
cerned, do occur most abundantly in the moister places. It is 
necessary, however, to point out that so far no freshwater shells 
have occurred. 
The Reigate deposit has been most baffling, as well as 
encouraging, for beyond the one certain neolith and the possible 
core, time data have been quite absent. In searching for 
further evidence of time, your Society can do most valuable 
work. - 
H. aspersa, Miill., has been found in pre-Roman burial 
mounds in Wiltshire in 1868 }, by Mr. J. W. Flower, F.G.S., 
on the banks of the Mersey in kitchen-middens of Neolithic 
* Mrs. McKenny Hughes, Geol. Mag. 1888, p. 205 sgq. 
t+ Kew: Dispersal of Shells, p. 241. 
{ Kennard, Proceedings of Malacological Society, vol. ii. p. 106, 
