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EASTERN CHALK HILLS. 391 run| of some authority, that the mass or stratum trata, of chalk, of which these hills are formed, does neline not much exceed that depth: an evidence Par| that is corroborated, by the thickness or ter is height of chalk, which shows itself, in the

. faces of different cliffs; so far, at least, as halk the eye can judge. By the assistance of in- aters struments, the exact thickness of chalk, of erio- different hills, in this Island, might be ascer- t for| tained., ars to Judging from the remarkable uniformity vould in their several heights, as they appear in Snot the face of the country, it is probable, they tract have had the same origin,—are fragments of ure,| the same stratum, or extended mass, of cal- arly| careous matter; which, there is much rea- hich son to believe, is of submarine origin,—is nated composed of animal substances, deposited, | and or otherwise accumulated, at the base of sting some great ocean,—an Atlantic of a former f, by world, or past arrangement of the earth’s uoht surface. Such, at least, appears to have se been the opinion of the GREAT NATURALIST ent(Linneus): and extravagant as the idea Feil seems. when it first strikes the mind, it be= \ dif comes more and more reconcileable to rea- ae son, the more it is examined.| sig| The SOILS of the range of hills, now ‘i| under view, differ much, in the aggregate, ENO aa Ae.

“ from those of the other Divisions. The tops

ects::=‘. of the higher swells, instead of having a thin

a chalky loam, or a thinner coat of black ve-

Ne,