UG 
lamplugh: the flamborough drainage sections. 
the Head. From this point its course is shown in the accompany- 
ing ground-plan of the village. (PL v.) 
I was not aware of the commencement of the work until the 
trenches had been rilled in between the outfall and the village, but 
from the description given to me by the engineer, and from the heaps 
of excavated material it would appear that this section was cut 
almost entirely through sand and gravel, evidently the continuation 
of the Beacon Hill deposit, though there may have been a thin 
capping of red earthy boulder clay in places. 
The branch which strikes off to the right through Beacon Farm 
Lane and thence northward to the Church, was also excavated to a 
depth of from 5 to 7^ feet, chiefly drift-gravel and sand, the finer 
gravel sometimes containing a few crumb-like fragments of marine 
shells, such as are found in similar gravels in the Cliff Sections. 
Towards the termination of this branch the upper portion of the 
gravel underlying the surface soil became very clayey and contained 
numerous large sub-angular erratics. It resembled, in fact, a much- 
weathered boulder clay, and probably marks the edge of the Upper 
Boulder Clay which is seen in most of the sections further west. 
Following the line of the main drain, gravels, sometimes con- 
sisting mainly of large flat pebbles of chalk and sometimes mainly of 
erratic pebbles, continued to predominate as far as the corner of the 
Bridlington Road ; and the shallow branch (averaging 6 feet) which 
struck westward along the road was also laid in similar gravels. 
In the opposite direction, however, along Church Street, the main 
drain passed through a constantly increasing thickness of red boulder 
clay immediately under the surface, with irregular beds of sand 
and gravel below, the depth of the sections being about 8' feet. 
At the corner of Tower Street, in a section of 10 feet in depth, 
the sandy beds had dwindled to an intermittent seam of less than 
one foot in thickness, covered by about 6 feet of tough red boulder 
clay. Below the sandy seam rubbly chalk was found passing down- 
ward into solid white chalk without flints. I had not suspected that 
the chalk at this point lay so near the surface, though the presence 
of an old disused chalk pit in Carter Lane, 300 yards to the north- 
west, proved the rapid rise of the top of the rock in that direction. 
