Primaeval Man in the Valley of the Lea. 113
left by primeval
man in Paleoli-
thic times. At 8
feet below the
"floor," and about
12 feet from the
surface of the
ground, is a bed
of gravel and sand
8 ft. in thickness,
containing imple-
ments of older
date; this bed is
shown at the base
of both the upper
and lower sections
in fig. 5.
To more clearly
show the nature
of the "floor," the
60 feet of the up-
per figure (where
marked) is en-
graved below to a
larger scale; b is
the 12 ft. gravel
containing rolled
fossil bones and
abraded Paleoli-
thic implements;
o is fine buff-
coloured sand,
often full of fos-
sil shells of land
and fresh-water
molluscs; d d d
is the "floor,"
with its numerous