284 
ME. PEESTWICH OX ELIXT-BIPLEMEXTS. 
lAid of ground 
in thf. pits. 
Sections i/n the 'pits at 2Ienchecourt near AhbeviUe* . 
N.W. Pig- 1- S.E. 
^'.E. 
Eig. 2. 
S.W. 
Tlie ground, in M. DtrroTJR’s pit, which is on the level of the village road, is 24 feet above the liighost 
tides of the Somme at Abbeville and 42 feet above the mean level of the sea at St. Talerv. 
Pig. 1. 
ft. in. 
a. Surface soil, — (and made ground, a') 0 8 
h. Brown clay mixed with siliceous sand, in which is imbedded a greater or lesser 
number of fragments of flints, mostly sharply angular, and weathered white. It 
is unstratified and very irregular in structure and thickness, its base forming a 
very indented line on c. It follows the slope of the ground. At places (more 
usually towards the base) it is mixed up with a mass of chalk rubble and flints, V : 
sometimes the two form more distinct beds, h always being the upper one 4 10 
c. Light buff-coloured, fine and uniform loam (loess), with a few very thin seams and 
patches of small gravel, flint fragments, and of chalk grit and rubble. Very 
calcareous ; a few small calcareous concretions. Bedding just apparent {Sable a 
of the workmen). Base wavy. Land-shells, bones, and^int-impletnents 15 0 
d. Pine white sharp siliceous sand, with fine chalk debris and a few scattered large 
sub-angular flints and subordinate beds of light-coloured clay or marl, d'. {Sable 
aiffre.) Freshwater shells often numerous and perfect, but very fragile ; some 
inarine shells •, common, chiefly on the gravel at base : ... 7 0 
e. White and ochreous sub-angular flint-gravel and large flints but little worn, with 
some tertiary flint-pebbles, and chalk pebblesf, in sand same as d-, shells and 
bones as in d, but with a larger proportion of manne shells, (also worked flints r). 
are found in the interstices between the flints 0 S 
f. Light-coloured very fine sandy marl, with a few large unworn flints here and there ; 
in places it is indiuated and very hard. (/S'aJZe ^ras.) chiefly land species 4 6 
32 S 
g. Ochreous sub-angular gravel, just reached in section Xo. 1 : — stopped by water. 
Pig. 2. 
ft. in. 
1 0 
4 0 
6 0 
2 0 
1 0 
3 0 
17 0 
* All the woodcut sections are on one vertical scale, viz. 1 inch =12 feet. 
j- I found also two very small sub-angular and roUed fragments of some old crystalline rocks. 
