A. R. Horwood—Post- Pleistocene of Central England. 549 
South of the Trent the Thirlbeck River alluvium has yielded— 
Bythinia leachii. Planorbis marginatus. 
B. tentaculata. Spherium corneum. 
Hygromia hispida. S. rivicola. 
Linnea peregra. Unio sp. 
Planorbis complanatus. 
The Car Dyke alluvium also afforded— 
Bythinia tentaculata. Planorbis marginatus. 
Helix nemoralis, P. spirorbis. 
Hygromia hispida. Spherium cornewn. 
Limnea peregra. 
At Edwalton the following were found :— 
Bythinia tentaculata. Planorbis marginatus. 
Clausilia cf. rugosa. Pyramidula rotundata. 
Limnea palustris. Vitrea cellaria. 
L. pervegra. 
VaLe or Betvorr. 
The alluvium of the River Devon contains the following aoe — 
Bythinia tentaculata. Neritina sp. 
Hygromia hispida. Valvata piscinalis. 
Limnea palustris. Unio cf. pictorum. 
LL. peregra. 
In the late glacial deposits at Kirby Park the tooth of a mammoth 
was found, which is now in the Woodwardian Museum, and was 
figured by Leith Adams (‘‘The Brit. Foss. Elephants”: Pal. Soc., 
1879, pl. xiii). 
At Hose’ in brown loam freshwater shells are found in the Smite 
Valley. 
In Barnes’ brickyard north of Melton in the Eye Valley, at a depth 
of 9 feet in sand, boles and roots of trees, with bark and hazel-nuts, 
occur. Mammalian bones occur in gravel below this, including a human 
cranium, and bones and antlers of the red deer. 
Vater oF River WELLAND. 
The deposits differentiated in the area covered by old Sheet 64 were 
grouped by Professor J. W. Judd? as follows :— 
(1. Marine alluvium, warp of Fens. 
_ | 2. Alluvium of present rivers. 
s | 3. Alluvium of old fen lakes. 
‘'S | 4. Peat interstratified with marine silt. 
ws 4 &. Marine gravels of Fenland. 
4 | 6. Estuarine gravels. 
3 | 7. Low-level valley gravels. 
Fuels: High-level valley gravels. 
9. Cave deposits. 
He defined the glacial beds as— 
1. Glacial or Boulder-clay. 
2. Gravels. 
3. Sands. 
1 The Geology of the Melton Mowbray District and South-East Nottinghamshire 
(Mem. Geol. Sury.), 1909, p. 89. 
2 Geology of Rutland, 1875, p. 56. 
