392 DISTRICT.

getable mold, are generally covered with a tenacious clayey loam, of a dark brown color, and extraordinary strength; and, in some places, of great depth; as three or four feet: being generally mixed with flints; especially, perhaps, near the surface; which, after harrowing, will in some instances, ap- pear covered with them.

This may be considered as the prevailing soil of the upper parts of the hills; espe- cially, where the surface is flat: while, on

sloping surfaces, the soil is generally a thin,

pale-colored, chalky loam; and, on the lower skirts of the hills, a deeper loam, of a somewhat similar nature, prevails. Be~ tween Croydon and Epsom, there are some thousand acres of this desireable soil;— deep, rich, friable, calcareous loam.

On the contrary, the opposite cliffs are, in many parts, destitute of soil; except where the face of the hill has slid down, and carried with it the soil of the summit; lodging it, on stages, or with steeply slop- ing surfaces, on which the ruRNWREST PLOW gains an instable footing: and for these, possibly, it was invented.*

* The TURNWREST PLOW is used on surfaces so extremely steep, that, on being overturned! the plow, horses, and perhaps the plowman, have been known to roll down, from the top to the bottom of the hill.

But, surely, sites of such a degree of steepness are