212 
Review and Book Notice. 
Punctium pygmaeum (Drap . ) 
Goniodiscus rotundatus (Mull.) 
Petasina fulva (Mull.) 
Helicella cellaria (Mull.) 
H. nitidula (Drap.) 
H. pur a (Aid.) 
Helicella radiatula (Aid.) 
Vitrea crystallina (Mull.) 
Cepaea nemoralis (Linn.) 
Clausilia rugosa (Drap.) 
Marpessa Laminata (Mont.) 
Succinea pfeifferi Rossm. 
Of these, six species are not known living from the East 
Riding according to the last census of the Conchological 
Society. They are, Acanthinula aculeata, A. lamellata, 
Vertigo pusilla, V. substriata, V. angustior and Columnella 
edentula. This is clearly a swamp faunule and would appear 
to indicate much damper conditions than now exist and 
probably much greater rainfall. It is now known that in 
early Holderness times there was a much heavier rainfall in 
the East and South-East of England than at present but 
these conditions had passed away in the Middle Bronze period. 
We may therefore conclude that the deposit cannot be later 
than the Beaker or Early Bronze .age, circa .1800 b.c. This is 
an important discovery since no deposit of this class has been 
known from the East Riding ; the Holderness deposits such 
as Skipsea being of earlier age (Maglemose). Further 
investigation “ may probably show a sequence.” 
We hope to add extensively to the list when we have 
further and longer opportunities for collecting. 
The Country around Cirencester (explanation of one-inch Sheet 
235, England and Wales), by Linsdall Richardson, F.R.S.E., with 
contributions by Professor J. A. Hanley, A.R.C.Sc., Ph.D., and H. G. 
Dines, A.R.S.M., pp. xi+119 ; 7 plates ; 5 text-figures. Price 3/- net. 
By post 3/4, from H.M. Stationery Office. This memoir is descriptive 
of the geology of the district bounded approximately by lines joining 
Cheltenham and Little Rissington ; Little Rissington and Lechlade ; 
Lechlade and Cirencester ; and Cirencester and Cheltenham, which is 
represented on a colour-printed geological map, new series, Sheet 235. 
The solid geology has for the most part been transferred from the Old 
Series geological map, but the superficial deposits have been surveyed 
specially for the purpose and their distribution indicated on the map. 
The author of the memoir is well known for his researches on the geology 
and geography of the Cotswolds . The introduction contains a descrip- 
tion of the physiography of the district. Then follows a detailed account 
of the various geological formations, This account has been written 
in as simple language as the technical nature of the subject permits and 
is naturally of most interest to specialists on the various formations : 
it is an indispensable handbook to the subject for the district with which 
the memoir deals. A valuable part of the memoir is that on Agriculture, 
which is contributed by Professor J. A. Hanley, sometime Principal of 
the Royal Agriculture College, Cirencester. This contribution was 
written with the definite purpose of being of use to agriculturalists and 
to those concerned in the investigation of soils. It should prove valuable 
to botanists for it contains many references to the connection between 
the flora and parent rocks. 
REVIEW AND BOOK NOTICE. 
The Naturalist 
