546 A. R. Horwood— Post- Pleistocene of Central England. 
Below this last horizon, in black consolidated gravel (8 feet thick), 
Edwin Brown found— 
CRUSTACEA. Planorbis contortus. 
Daphnia. Physa fontinalis. 
Limnea peregra. 
GASTEROPODA. L. palustris. 
Vertigo. L. stagnalis. 
Cochhcopa lubrica. Bythinia tentaculata. 
Suceinea putris. 
AP arate We. LAMELLIBRANCHIATA. 
P. spirorbis. Spherium corneum. 
Most of these too were found at Hay, Mosley Street, and in 
excavations for sewage tanks at Stretton. Compared with those 
found in the peats and clays at Stapenhill on the other side there is 
a difference in species. At Barton Station, south of Burton, roots of 
plants and branches of trees were met with, and containing an 
admixture occasionally of peat, 2 feet in thickness, below 6 ft. 2 in. 
of clay, sand, and gravel.1 The latter were impregnated with 
carbonate of iron and manganese, containing much vegetable matter. 
In forming No. 3 tank at Stretton the following section was 
uncovered :— 
1. Yellow clay ‘ : : : 1 foot. 
2. Blue clay, containing plants : : 6 inches. 
3. Peat . ¢ : : . ' ¢ 3 feet. 
4, Shell marl, with bones, jaw, teeth (Bos 
longifrons) . : : 6 : 1 to 8 feet. 
5. Gravel with flints, bottom not seen : 3 feet. 
Sift. 6in. to 15ft. 6in. 
The deposits were very variable, the shell marl full of shells, 
irregular, sometimes lying on gravel, sometimes on peat, or dark clay 
with aquatic shells. Plant roots penetrate from the peat through the 
shell marl into the gravel. In the blue clay matted masses of aquatic 
plants occur coated with phosphate of iron. Dr. H. T. Brown, F.R.S.,” 
gives the following section at the Sewage Works near Stretton 
(140 O.D.) :— 
Soil, subsoil, and sand 
Sandy clay 
Red sand ; 
Thin bed of peat : : 
Sand stained with peat . : 
Dark peaty clay, more peaty below 
Peat, with sedges and hazel-nuts F : 
. Irregular bed of sand, coloured by peat, with a 
thin, irregular bed of gravel (1 to 2 inches), 
in other places a highly calcareous shell marl . if 0) 
9. Very thin beds of interstratified clay and sand. 3 0 
10. Gravel . : s : c : 3 : 5 0 
Mar! below. — 
EPNHOHOWwse 
=o 
BRON RAOB 
i 
1 About 30 feet below the surface in the gravels a deer’s horn was found. 
2 Vide The Geology of the Country between Derby, Burton-on-Trent, and Lough- 
borough, 1905, p. 64. 
