Catalogue Raisonné. 73 
Marls alternating with compact light blue limestone. 
Lias in the east. Silicious sandstone in the west. 
Lias. jane earthy limestone, ) Terebratulites, Pecten, Pla- 
sandy, oolitic. giostome, Ammonites. 
Micaceous shales, (Milhau,) Gryphea cymbium, Belem- 
. Inferior Oolite. nites, &c. 
Cornbrash, Forest } Compact yellowish earthy limestone, (Ennandre,) alter- 
Marble, and Great | nating with grayish-blue compact limestone. 
oolite. White oolite, (Mauriac,) associated with madreporites 
. ane orale, a at Caen. ee 
: ‘ ompact, friable, and marly limestone. 
ee oe Blue clay, alternating with white marls. =: 
rots ~ -) Bed of hard rough limestone, full of Terebratulites. 
9 ye Limestone, with Madreporites, &c. 
Superior Oolite, { Blue marls. . é : 
Purbeck b eds,P ort. | ine-grained oolite, alternating with beds of compact ear- 
thy limestone. 
Marls, with Gryphea virgulata. 
Hard limestone beds. 
land oolite, and 
Kimmeridge clay. 
Notes on the Differences, either Original, or consequent on Disturbance, which 
are observable in the Secondary Stratified Rocks. By Henry T. DE LA BECHE, 
Esq. F.R.S8. &e. 
An inquiry into the differences in the nature of the mass of certain forma- 
tions, in contradistinction to the mechanical variations of structure in 
the hand specimen, and into the difference of structure which may take 
place in analogous formations, principally developed by a reference to 
the difference in mineralogical structure between the oolitic formations 
and lias in England and the north of France, and the same formations 
in the Alps and in Italy.—Phil. Mag. No. X XXIII. p. 213. 
On a Discovery of Fossil Bones in a Marl Pit near North Cliff. By the Rev. 
WILLIAM VERNON, F.R.S. &c. 
The bones of the elephant, rhinoceros, deer, ox, horse, and a large species of 
Felis, were found under diluvial chalk gravel, at a depth of from 15 to 
20 feet, in a marl indented in such a manner as to appear to have been 
deposited before it, and containing both land and fresh water shells, He- 
lix, Pupa, Lymnea, Planorbis, and Cyclas. 
The mar! pit is on the eastern boundary o1 the red marl, where that for- 
mation approaches the low lias hills which skirt the south-western side 
of the Wolds. The strata are black sand, yellow sand, white gravel con- 
sisting of small pebbles, of chalk, and angular fragments of flint, with a 
few pieces of Gryphea incurva, and fewer pebbles of sandstone, blue 
marl, irregularly penetrated by the gravel, and a blacker marl. The 
greater part of the bones were found in the latter bed.—Jid, p. 225. 
On the Discovery of Iodine and Bromine in certain Salt-Springs and Mineral 
Waters in England. By Cuoartes Dauseny, M.D. &c. 
Professor Daubeny has found bromine in one of the Cheshire brine springs 
and iodine in two or three. Also in the saline water of Cheltenham, * 
Leamington, Gloucester, and Tewkesbury. The professor does not men- 
tion the methods of analysis which he followed, nor the tests employed.— 
Ibid, p. 235. 
On the Early History of the Steam Engine. By A. AInGER, Esa. 
It is customary in each successive year, to fill up a part of the vacant pages 
of the Annuaire du Bureau de Longitude, by some brief scientific essays. 
The year before last, we remember that portion was devoted to the dis- 
cussion of the Voltaic theory of hailstones, and the utility of conductors 
dispersed over cultivated tracts of land; and the same pages have this 
year been made the receptacle of a paper on the rival pretensions of 
* Mr. Ainsworth had announced the indication of the presence of iodine in 
the Cheltenham waters, (obtained by the use of the ordinary tests,) before the 
Plinian Society, at a meeting in the session of 1827. 
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