234 M. C. Rayner, W. N. Jones and J . W- Tayleur 
Y g . Edge of heather area. Similar to Y 7 . Chalk at 24—28 
inches. Chalk rubble at 16—20 inches. Scattered patches of 
Calluna. 
Y 9 . Outside heather area, but latter shews a tendency to 
spread in this direction. Ground levels suggest that the clay-with- 
flints continues for some distance in this direction. Chalk rubble 
at 17—18 inches from surface. 
I. Reference to the details obtained from the holes and 
sections plotted from them (Fig. 2) shows that the solid chalk 
occurs at a depth below the surface varying from 9 inches at Y x to 
over 2 feet 6 inches in the middle of the heather area. 
The thickness of chalk rubble above is variable and its upper 
limit is very irregular. In the hole Y 3 for instance, the top of the 
rubble comes within 8 inches of the surface at one point, within 16 
inches at another. The overlying deposit of clay-with-flints is 
TABLE I. 
Y, 
Y s 
y 6 
Y e 
Y, 
Y, 
6 inches- 
■ 
Nature of 
soil. 
Percentage 
of CaC0 3 
Chalky 
Loam 
Loam 
Heavy 
Loam 
Heavy 
Loam 
Heavy 
Loam 
*43-6 
■005 
•193 
•009 
•064 
•016 
12 inches-! 
r 
Nature of 
soil. 
Percentage 
of CaCO s 
v 
— 
Heavy 
Loam 
— 
Clay 
Clay 
Clay 
— 
2-44 
— 
•014 
— 
— 
* This sample was taken at 3 inches instead of 6 inches owing to 
the thinness of the soil. 
x 2 
x 3 
x 4 
x 5 
x 0 
6 inches 
Nature of soil 
Percentage of 
CaC0 3 
Clayey 
Loam 
Heavy 
Loam 
Clay i 
Heavy 
Loam 
Loam. 
3-38 
•732 
■123 
•027 
•093 
12 inches < 
Nature of soil 
Percentage of 
CaC0 3 
— 
— 
Heavy 
Clay 
— 
— 
— 
— 
•024 
— 
— 
