Ue Einin-bedded).ertties. a0 2 teeis 2 ee 2 inches. 
12. Fibrous carbonate of lime........ \ 
nS eeng Gunitare ie yoy hice gooey go grins Beha te 6 — 
14. Fibrous carbonate of lime........ 
15. Soft shelly sandstone. . 2 — 
16. Light brown and blue ‘limestone, 7 
abounding with the Isopodous | 
Crustacean ; in the lower part, la- > 6 — 
minated and numerous cyclades, | 
and a few small oysters........ 
17. Blue compact grit, full of impres- | , pis 
Stons Ofcy clas. st 1m a: rs 
18. White laminated crystalline lime- 
stone, very different from that 
forming Nos. 2 and 4. 
Water—ainferior strata not visible. 
The Isopods in the bed No. 16 often occur in clusters. Lenses 
of the eye are sometimes detectable in the limestone, and more 
rarely attached to the head; traces of legs have also been observed, 
but no antenne, In the same bed the elytron of a coleopterous 
insect was discovered. 
Among the heaps of debris, consisting of sits and. limestones, 
derived apparently from beds subjacent to No. 18, but not visible, 
Mr. Brodie found fragments of a limestone different from the varie- 
ties in the preceding section, being generally coarser, softer, and 
less compact, and often white on the edges, but blue in the centre. 
It passes into a grit, in which he procured oysters, numerous bones 
and palates of fishes, and a tooth of a saurian. The limestone is full 
of a large distinct species of cypris; it contains also traces of car- 
bonized wood, impressions of small plants, some of which resemble 
grasses; likewise remains of Isopods, a few bivalves, apparently 
cyclades, one fragment of a univalve, and, dispersed throughout its 
substance, insects and small fishes, sometimes microscopic. The 
insects discovered by the author consist chiefly of coleoptera, but he 
procured a beetle with the antenne attached, about half an inch in 
length; remains of a Homopterous insect, and probably of several 
species of Dipterus, presenting distinctly, in some specimens, the 
wings, legs, and striz of the abdomen; also a wing of a Libellula. 
Mr. Brodie believes that this is the first instance of the discovery 
of insects in a Wealden formation; and he observes, that for abun- 
dance and variety of specimens, the beds of the quarry resemble 
more a tertiary (Aix and Céningen) than a secondary deposit. 
Mr. Brodie infers, from the occurrence of oysters in some of the 
layers, that the beds were accumulated in an estuary which afforded 
considerable variations in the nature of the sediment accumulated, 
and of the animals by which it was frequented. 
In conclusion, the author states, that he is indebted to Mr. Owen 
for determining the characters of the fossil Isopod. 
