CORRELATION OF THE BOURNEMOUTH BEDS. 
The marine bed last described occurs 
on the east side of a slight indentation of 
the cliff, some 30 yards across, formed by 
a spring. Owing to this spring, which 
has of late years caused frequent land- 
slips, the section is seldom to be seen; 
but it was visible after much digging 
during the summer, great cracks threat- 
ening all the time, however, a fresh slip. 
No description can render intelligible 
the complicated structure of this part of 
the series, the broad lines of which are 
sketched in fig. 5. On the west side of 
this landslip occurs the first leaf-bed 
which bears evidence of having been de- 
posited in fresh water. It is made up of 
thin layers of a pinkish clay between 
films of sand, and in one place contains 
nothing but leaves of ferns belonging to 
Polypodium, Chrysodium, Pteris, and 
Osmunda. 
Other beds contain a few dicotyle- 
donous leaves mixed with the ferns, 
among them a Hucalyptus ; whilst some 
of the dark beds contain branches of 
Sequoia, leguminous pods and leaves, &e. 
Over this, and to the east of the landslip, 
the last shingle-beds of the Boscombe 
Sands occur in lenticular, sometimes 
truncated patches. About 100 yards 
further west the marine beds finally thin 
out and end in a point, the cliffs being 
nearly all composed of white sand with 
short irregular patches of vegetable 
matter. The lowering of the cliffs and 
the rise of the underlying beds termi- 
nate the upper or marine series at this 
point. 
nipora circumcincta of Heller is also connected 
by short tubes, which are more numerous than 
in Diachoris. 
“J think your specimen might well be called 
Diachoris intermedia if it is allowed to remain 
with Diachoris. 
“ There is also a cast of Membranipora, which 
in shape much resembles Membranipora pilosa, 
which is common on the seaweeds all round 
our coast; but as there are fossils with similar- 
shaped cells and great variation in other points, 
no specific determination is possible from casts. 
«Phere is an impression of an Lschara or 
Lepralia, which, I fear, cannot be determined.” 
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