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CORRELATION OP THE BOURNEMOUTH BEDS. 7
The lenticular patches, both of clay and sand, are frequently cut
through their steep face to the west, and redeposited, the clays
being rolled into small boulders and pellets (fig. 3).
Fig. 3. — Example of Clay and Sand Beds, imbedded in loose Sands
presenting Escarpments to the West, East of Sugar-loaf Chine.
Under the leaf-bed just described five reefs of pyrites* are visible
at low water, running south-east with a W.S.W. dip. These are
succeeded by dark clay dipping E., about 1 in 50, in which I ob-
served a palm trunk in situ and numerous spines, and a bed of hard
lignite, from 6 inches to a foot thick, underlain by brown clay with
roots and covered by pyritesf . Rocks of pyrites again occur opposite
Watering Chine, although they are never quite uncovered by the
sea

and by means of a diver I was able to trace them two miles sea-
wards towards Alum Bay.
In the third section of the cliffs, from Watering Chine to the
Bourne valley (fig. 1), several distinct horizons can again be traced. At
the base there are (1) black clays, obliquely bedded, recalling those
at the base of the fossiliferous series nearer Poole. Then, in ascend-
ing order, interrupted and often separated from each other by sands,
(2) black sandy clay, (3) ironstone, (4) small patches of pipe-clay
or lightish sandy clay imbedded in sand. Tracing these from bluff
to bluff, the dark-sandy-clay (2) and the ironstone (3) horizons are
the most distinct, and dip some 3° E.

but the pipe-clays (4) are for
some distance only represented by an irregular line of small lumps.
Up the chine these horizons seem to rise 4° or 5° N.W. About half-
way towards Bournemouth the dip brings in, at first close to the top
of the cliff, a new horizon of sandy clay (5), with indistinct leaf-im-
pressions at the angle of Broad Chine. The lower bed of dark sandy
clay (2) can be traced across Broad and Middle Chines, until at its
western angle it is carried below the beach

and soon after the iron-
stone horizon (3) also dips out of sight. The horizon can^ however,

Many beds charged with iron or lignite, though friable in the cliffs, become
indurated by sea-water.
t Since writing this description, a very extensive bed of lignite was left exposed,
just west of Watering Chine, for a few hours by a violent easterly gale and spring