328 
THE GEOLOGIST. 
trench, which was of further importance as proving the superposition of these 
beds to the Boulder clay, gave the following section : — 
1. Ochreous sand and gravel, passing down into white 
sand 4 9 
2. Seams of fine white and ochreous gravel 1 3 
3. Light grey sandy clay 0 8 
4. Coarse Yellow gravel in which the fiint-impleinent was ^10 feet. 
found 1 0 
5. Grev and brown clay with abundance of ... 2 4 
6. Boulder clay 1 OJ 
Both in the gravel c and in the clay d bones of mammalia are still not unfre- 
quently met with. I obtained a fragment of a rib of a deer and part of the tooth 
of a horse, and I afterwards saw, in the collection of Mr. T. Amyott of Diss, 
the astragalus of an elephant, which from the matrix in its interstices evidently 
came from the bluish calcareous clay d. Pieces of wood, some of considerable 
size, are found in this latter bed. Amongst them may be recognised species 
of oak, yew, and fir ; together with small seed-vessels. In the lower part of 
this bed are thin seams or partings of sand full of shells, perfect but very friable, 
of the following recent land and freshwater species : — Cyclas cornea, Pisidium 
amnicum, TJnio (fragmentary), Bithinia tentaculata, Helix nitidula, H. hispidoy 
Limneus palustrisy L. truncatulus^ Planorbis albus, P. spirorbis, Succinea putris, 
Valvata piscinalis. 
According to Mr. Trere, the flint-implements were discovered in gravelly 
soil underlying sand with shells and bones, and overlying a peaty clay. This 
would seem in some, but not in all respects, to agree with either c ov e oi the 
present section. Both overlie peaty clays. The men, however, say that it is 
not in those beds, but higher up in {b) that they now find the flint -implements. 
The gravel e is below all the beds worked. I had an excavation made in it, 
but without success ; nor was my search in the other beds more successful on 
my first visit. 
" The general evidence of this case certainly wants the completeness which 
the French deposits afford, but still there is every reason to believe it to be an 
analogous case. Unfortunately the old part of the pit is now worked out and 
overgrown, but it is to be hoped that a full and efficient exploration of this 
interesting spot may some day Idc made. Mr. Evans and I had several trenches 
dug, but much more is yet required. In one on the south side of the field, 
the brick-earth {b) was only four feet thick, and was overlaid by three to four 
feet of ochreous drift-sand and gravel, and underlaid by two and a-half feet of 
small gravel (composed in great part of small chalk pebbles) resting upon a 
grey clay. The other trench, on the east side, exhibited a bed of yellow sand 
with a few fiints, three and a-half feet thick, passing into ochreous gravel one 
foot, and under it a seam of grey clay one foot thick, and then another bed of 
gravel, at the top of which we were stopped by water. At a distance of a 
hundred and fifty yards from this spot, and on the other side of the small 
stream, is a pit in which the boulder clay is dug, and where no other beds are 
exposed." 
(To be continued.) 
