A THRUSH STONE. 
While walking along Cadney Beck in February, 1905, Mr. A. 
Smith pointed out to me a Thrush Stone under a hedge on the 
Red Carr arable Peat. Next day I collected all the shells round 
it, and the following is my analysis. 
Helix nemoralis vat. libellula — - - - 693 
+ voseolabiata - - 2 
+undulata - - - 10 
-+-albolabiata - - : 2 
var. rubella - = - 286 
+undulata - - : 8 
-+-voseolabiata - - - 
Helix arbustorum - - - = 25 
var. cincta : - - 4 
Helix cantiana - - - - a 
Helix hispidosa - - - - I 
Dreissensia polymorpha 2 = = I 
1060 
I have found more shells at a Thrush Stone on the Estuarine 
Alluvium of the Trent, but never quite such a variety at one- 
stone. In this case some 300 which had been in the peat water 
were not added, because they were unrecognisable for classing. I 
should judge another 400 were left in the ditch. ‘ihere was nota 
really interesting shell in the whole taking. The thrushes gather 
them on the Freshwater Alluvium of the Beck bank. Curiously 
enough within 300 yards is a spot where Helix nemoralis, 12,045, 
is fairly common. 
E,A,W.-P, 
