NOTES AND QUHrilEW. 
the kilns above Cavcrsliam, whcro ilinrc arc lyinf^ about many l)lor'ks of liniR- 
stouc IVom it, which arc very tull of fossils. This " bascnK'iit-l)c(l" is a loam, 
or saiuly (^lay, of a wucral dull brown colour, with occasional scams of fjrccn- 
saiul coutaininn; shells in a very perfect state, until one attempts to ^et tiien\ 
out; lliut-pebblcs, often in beds, ironstone-nodules, and masses of hmestone 
are of frecpient occurrence. The limestone is very often nothinj^ but a mass 
of fossils, generally the Dilnipa plana. The foUowmg fossils have been found 
in tiic "basement-bed" at the various places above-noted. : — Naticn glaucinoiden, 
n. sp., Cali/plrwa frochiforniix, Fusiis, Pleurotoiiia, Scalaria, Fectuncnlus hrevi- 
rostrh, Ci/tlierea ohliqua, Cardium n'Uens, C. Pliimdeadiense, C. sp., Pinna, 
Modiola eler/ans, Oyster, Ditrupa plana, and Cancellaria (?). Of the Loudon 
Clay itself i do not remember any good sections. 
The low-level-gravel is thick and plentiful near Reading, far too much so 
indeed to suit a lield-geologist, as it hides other beds, and makes their boun- 
daries doubtful. Maunnalian remains may pernaps be found in it, as they have 
been in the same bed near Maidenhead and at Hurley, near Great JNIarlow. It 
is made up almost wholly of flints, chiefly sub-angular fragments, but partly in 
the state of rounded pebbles ; the latter derived from the wcai'iug away of 
older Tertiary beds. 
A more detailed account of the sections here noticed, and of some others in 
the neighbourhood, will be found in the above-mentioned memoir, which will 
be published very shortly. — I am, yours truly, William Wiiitaker. 
P.S. Since writing the above I have liad occasion to spend a couple of days 
at Eeadin^, and I then noticed a section of the basement-bed of the London 
Clay, at the kiln at Woolwich Green, nearly a mile to the south of Tlieale 
station. The section is chiefly in the London Clay itself ; but at the northern 
end the " basement -bed" has been cut into. Not much more than a foot of it 
is now to be seen ; but in that small thickness there are two or three beds of 
fossils, in which I noticed at least fifteen species. In the course of a few 
weeks, when this bed will be cut further back, I should think that, with care, 
many good fossils might be got from it. — W. W. 
Agl of the Wexfoud Scuists, &c. — Deak Sir, — ^Will you be so kind as 
to oblige me by inserting in your next publication, and by way of adjunct to my 
paper which appeared in the " Geologist" of Pebruary last, that I consider 
the Wexford scliists, slates, and grits, composing the coast -line from Dollar 
Bay in the south to Arthurstown or Kingsbay in the north, as identical with 
the Lougmyud or Cambrian rocks of Wales ; and that the Llandeilo beds at 
Duncannou referred to in my former observations lie in a trough or depression 
among the more ancient deposits. 
About twenty years since I obtained one species of Oldliamia and Arenico- 
Ufes from the district now referred to — near Aldridge Bay, in the county of 
Wexford. This I showed to officers employed on the government survey and 
to other geologists ; but the specimens which I had procured after a laborious 
research were regarded as not exhibiting sufficient organic striicture to allow 
of their being admitted on the list of fossils found in the United Kingdom. 
I now make known my claim as to being the first to record the fact of the 
existence of Longmynd or Bottom-rocks in the county of Wexford. I laboured 
for several years among those old rocks, breakuig stratum after stratum for 
many miles, therefore feel much interest in everything relating to their history. 
— Dear sir, yours truly, Thomas Austin. 
Lamellar Structure op Eocks. — Sir, — I would feel obliged if yon 
could give any information respecting the lamellar condition of rocks long sub- 
ject to the action of the waves ? Balls of earth exposed to them soon become 
hardened into concentric layers ; and many large boulders are to be seen on 
the sliores here whose centres are perfectly compact and as hard as granite, 
the inQuence of the sea in crystallizing and moulding them being quite visible 
