Primaeval Man in the Valley of the Lea . 
117 
(. - 5 .6 - x - 6 -0 -> 
under and upheaving the “floor” with its implements; the 
Hackney Brook is towards the south, and a flooded brook to 
the south would hardly up¬ 
heave the “floor” from the 
north; a is a mass of London - 
clay and sand brought from a 
distance and pushed under 
the “floor” by the advancing 
‘ ‘ trail ’ ’ from the north. Where 
the “ floor ” has been crum¬ 
pled and disturbed the im¬ 
plements show a very small 
amount of abrasion; when the 
“ floor ” is covered by the 
stratified sand or mud of the 
river, the tools are all as 
sharp as on the day they were 
made. 
It fortunately happens that 
very near the sections here 
illustrated, viz., at 270 yards 
west by north from Clapton 
Bailway Station, and just 
south of Caroline Street 
(marked on Stanford’s map), 
one or two other cuttings have 
quite recently been made; 
these show admirable sections 
of characteristic “ trail.” At 
fig. 7 a section facing south 
is engraved to scale; and at 
fig. 8 the end of the section is 
further enlarged to show the 
“trail” and “warp” above, 
and the stratification below. 
The section is 11 ft. 6 in. deep, 
and just reaches the top of the stratum of'gravel which 
contains implements intermediate in age between those of 
Fig. 7. 
