34 THE ESSEX NATURALIST
ft.
8. Marsh clay, grey at bottom, 4
7. Peat
6. Thin band of pebbles
5. Peat with much wood
4. Grey sandy silt 3 to 4 in all
3. Peat with hazel nuts
2. Grey sandy silt
1. Gravel of flood plain
These samples were not taken from the centre of the deposits
but a little to the east. Further west, the material in the dumps
indicated that the lower part of the channel contained a fine,
cream coloured silt penetrated by streaks of plant matter and
containing some small ferruginous lumps. The sample was
washed and yielded a small but characteristic set of molluscs,
as follows :—
Valvata (Cincinna) piscinalis (Muller) 3
Lymnaea (Galba) truncatula (Muller) 6
Lymnaea sp. cf. L. (Radix) peregra (Muller) juv. 4
Planorbis (Gyraulus) laevis Alder 2
Planorbis sp. cf. P. (Anisus) leucostoma Millet 1
Succinea sp. 10
Columella columella (Benz) 1
Pupilla muscorum (Linne) 5
Vallonia excentrica Sterki 2
Hygromia (Trichia) hispida (Linne) 11
Punctum pygmaeum (Draparnaud) 4
Slug granules abundant
Small Pisidia 25 valves.
Several of the shells were fragmentary or immature, and
their identification was difficult. The suite is, with only one
exception, characteristic of the Nazeing Stage. The exception
is Punctum pygmaeum which, however, is recorded at Naze-
ing from the land surface deposits ("Surface D") which
follow the bed. Thus its presence can be easily explained.