File:The Quarterly journal of the Geological Society of London (12894882215).jpg

1864..
WYATT FLINT IMPLEMENTS AND FOSSIL MAMMALIA.
185
the current of the ancient Post-
pliocene river had eddied round
it, depositing a large bed of gravel,
silt, and mud on one flank, and
subsequently shifting its course.
The excavation by the railway
contractors gave a transverse sec-
tion of the deposit; and beds of
gravel, of the depth stated, were
shown between the alluvial soil
and the Oolitic clay at the base.
The gravel was similar to that at p§
Biddenham, stibangular, and com- jjs
posed of flint, limestone, New Red .»
Sandstone, trap, and various old g
rocks — just such a collection as is "f;
found in the neighbouring hills of g
Boulder-clay; but some of the peb- 1
bles are much rolled. The section &Q
presented none of those contortions ^
of the strata which are so frequently §
displayed at Biddenham

but the hg
layers of gravel, sand, and mud were ^
unusually conformable, the con- S
stant deposit, of the current appa- ^
rently extending over a long period g
of time

while the large quantity of i
marginal and land- shells at differ- fc^
ent depths, the marks of vegetable ©
fibres in the mud, and the black g
streaks as from decomposed wood ■*§
indicate a long continuance of this §
as a bank or shoal line. There §
were three very distinct layers of ^
mud; those at the depths