74 LAMPLUGH : NOTES ON THE WHITE CHALK OF YORKSHIRE. 
the contortions, that horizon being probably only a little depth below 
sea-level on the opposite side. 
For the next three-quarters of a mile the vertical cliff is still 
composed from top to bottom of Flinty Chalk, and the flints at the 
summit are in thick tabular masses, showing, if other evidence were 
wanting, that at this horizon we are considerably below the top of 
the flint-bearing strata. The base of the cliff in several places rises 
from the sea at all states of the tide, and the uniformly resistant 
character of the rock is shown by the simple wall-like outline of the 
precipice. But beyond Kit Pape's Spot (oddly miscalled Kit Pape's 
Pot on the old 6-inch Ordnance Map) a rocky foreshore begins to 
show at low tide, and is continuous and traversable from this place 
to the ending of the Chalk cliffs at Speeton, over two miles distant. 
The appearance of this foreshore marks the place where the base 
of the Flinty Chalk rises above low-water and the less resistant 
Lower Chalk is brought up to receive the direct battering of the 
waves. At this point a fine spring of fresh water wells forth from the 
foot of the cliff a few feet above low-water mark, a welcome spot 
for anyone who on a hot day makes the toilsome journey over the 
bouldery beach from Speeton. 
We have here 325 feet of Chalk- with-flints in one section, and as 
just mentioned, the summit of the section is still considerably below 
the top of the division. It is therefore evident that Blake's estimate 
of 370 feet is inadequate, and of course still more so Barrois' of 260 
feet, and that even the 400 feet allowed by Phillips is not sufficient, 
though it is not easy to determine how much should be added. 
I think, however, we may safely reckon 30 or 40 feet in addition 
to the height of the cliff for the depth of the Chalk-with-tabular- 
flints, and about 100 feet more for the Chalk-with-nodular (or 
"imperfect") flint, of which latter 76 feet was actually measured 
in the section east of Selwicks. 
This gives us a total of 460 for the flint-bearing Chalk ; and a 
consideration of the pits and other sections in the interior will show 
that this is not likely to be an overestimate. In walking inland at 
right angles to the cliff, we go nearly along the direction of the dip, 
and consequently almost directly across the bedding ; yet the breadth 
