ately EASTERN CHALK HILLS. 389

Eig parts of Kent, is later than the more de- en led pressed, broken, and better sheltered lands of Surrey; the warmer parts of which are hill something, but not much, behind the vale In a Jands that border them: last, The surface WATERS, collected by "pose these hills, are few. The rivers, which dis- 1 Se- sect them, are chiefly drawn from the ex- ween tensive vale lands, to the south of them. The only constant stream, I believe, which with| is collected from the hills, is that which rises , from in the easternmost compartment(chiefly lines, perhaps in the vallies of the ragstone ment, heights) and winds down the charming val- | ley of Bishop’s Bourn; joining the Stower, the| below Canterbury. ewel, But, in different parts of them, periodical sion, springs, or“ BOURNS,” rise at particular ining seasons. That which issues from the deeper Ae: vallies of the hills of Surrey, and enters the 5 he- head of the river Wandle, at Croydon, some-

Nes times takes the character of a brook, of con- Hithe siderable size; more particularly, when the preceding season has been rainy.

eneral ee ae Beside the periodical springs, which rise

rag within the areas of the hills, there are con-

| tinual discharges, at their outskirts, on either a side. Those, at the feet of the southern ; 4 steeps, are in general small; emitting little 5 8| more, perhaps, than the rain waters, which oe| the steeps themselves absorb: while those !

| on the opposite side are copious; as being