Chalk Cliffs near Dover . Si 
only a foot or two above the base of the cliff, and there are many 
interspersed flints within a few feet all around it. Two other am- 
monites from 12 to 18 inches in diameter, are visible at low water, 
in chalk, belonging evidently to that with few flints, but whether 
it be in situ or not, it is difficult to determine. One of them is 
distinctly oval. 
About a mile and a half east of Dover, and near the place at which 
this stratum rises from the beach, I found the cast of a nautilus in it. 
Iron pyrites is by no means uncommon ; it usually occurs in 
globular masses, coated by crystals having the form of the octohe- 
dron, which sometimes are attached to a flint : in one instance it 
was observed filling up the cracks in one. One mass had been 
formed around a terebratula, of which the shell, filled by pyrites 
remained, but in a friable state. This stratum yielded to my search 
pectinites, terebratulse, and the palates and vertebrae of fishes. A 
nearly perfect specimen of one species of the striated shell or ino- 
ceramus, perhaps the only one hitherto discovered, was found by the 
workmen employed in squaring the chalk ; it was nearly filled with 
flint, and was partially imbedded in it. 
Several excursions along the cliff between Dover and Folkstone, 
both at its base and on its summit, as well as the- occasional oppor- 
tunity of ascending or descending it, enabled me at length satisfac- 
torily to discern the nature of the connexion of the chalk with few 
flints, with that on which it reposes, namely, a thick stratum with- 
out flints, enclosing numerous thin beds of organic remains, lying 
nearly close together. 
A thin bed of soft marie lies between these strata. It may be 
readily traced along the cliff, as a crevice, for a considerable dis- 
tance, but is most conveniently viewed while ascending Shaks- 
peare’s cliff from the town. Flints are here and there visible a few 
