INDEX. 
718; by Mr. Henwood, from Lockport, 
453 ; list of, from the Silurian system 
of Shropshire, 560. 
Cucullza decussata, Mr. Trimmer on the 
locality and geological position of, 456. 
Cuernavaca, notice of the cavern of, 705. 
Cumberland, proofs of glaciers in, 346; 
on the elevation and denudation of the 
lake district of, 757. 
Cumbrian groups, Prof. Sedgwick on the, 
550. 
Cunningham (J. Esq.), on fossil impres- 
sions of rain-drops, 99. 
Darwin (C. Esq.), on erratic boulders, &c. 
in South America, 425. 
Defaulters, notices respecting removal of, 
from the Society, 425, 430, 437, 619. 
De la Beche (Mr.), observations by, on 
receiving as Foreign Secretary the me- 
dal awarded to M. de Buch, 635. 
Delhi, remarks made during a journey 
from, to the frontier of Little Thibet, 
566; on the temperature of well-water 
near, 732. 
Dental formule, notice of, in Mastodon- 
toid animals, 771. 
Denudations, Mr. Martin on the relative 
connexion of the eastern and western 
chalk, 349; My. Hopkins on the, of the 
lake district, 757. 
Depressions, account of, produced by ex- 
cavating coal-seams, 147. 
De Verneuil (M. E.) and Murchison (R. 
I. Esq.), on the northern and central 
portions of Russia in Europe, 398. 
, Murchison (R. I. Esq.) and 
Keyserling (Count de), second geolo- 
gical survey of, by, 717. 
Devonian system, Prof. Sedgwick and Mr. 
Murchison, establishment of the, 121; 
on the, of Westphalia, 803; Mr. Mur- 
chison, M. de Verneuil and Count Key- 
serling on the, of Russia in Europe, 
400, 719; in the Ural mountains, 744. 
Devonshire, Mr. Williams on the grey- 
wacke of, 115, 158; Prof. Sedgwick 
and Mr. Murchison on the classifica- 
tion of the older rocks of, 121; Mr. 
Austen on the south of, 128; on the 
bone-caves of, 286. 
Dichobune, Prof. Owen’s notice of re- 
mains of, from the Isle of Wight, 3. 
Dinan, Mr. Lyell on the faluns near, 439. 
Dinton, section of strata near, 134. 
Dixon-fold, Mr. Hawkshaw’s account of 
fossil trees founda near, 139 ; additional 
observations, 269; further observations 
respecting, by Mr. Bowman, 270. 
Donetz, account of the coal-field of the, 
721. 
Donors, list of, during 1838-1839, 48 ; 
805 
1839-1840, 197; 1840-1841, 375; 
1841-1842, 624. 
Doué, Mr. Lyell on the faluns near, 440. 
Drift, account of, in Norfolk, Suffolk, Es- 
sex, &c., by Dr. Mitchell, 3; Mr. Lyell . 
on the, of Eastern Norfolk, 171, 176; 
Mr. Trimmer on the, between Lynn 
and Wells, 185; Mr. Murchison, M. de 
Verneuil and Count Keyserling’s ac- 
count of, in Russia, 404, 729; Lieut. 
Newbold’s notice of, in Egypt, 789. 
Dufrénoy (M.), and Elie de Beaumont 
(M.), letter from, on presenting the 
Society with a copy of their map of 
France, 588. 
Du Gard (Dr.), notice of, in the obituary 
of the President’s Address for 1841, 523. 
Dumerisques on the river Ristigouche, 
sectional list of strata near, 455. 
Dumfries, notice of proofs of glaciers in, 
338. 
Earthquakes, Mr. D. Sharpe’s notice re- 
specting the, at Lisbon, in 1755, 36; 
M. Necker on a probable cause of cer- 
tain, 37; Consul Chatfield’s notice of, 
at San Salvador, 179; Consul Hunt’s 
account of, in Terceira, 565. 
Eastern Norfolk, Mr. Lyell on the drift 
or boulder formation of, 171. 
Easton, notice of a canine tooth found in 
crag at, 10. 
Easton Bavent Cliff, account of annual 
destruction of land at, 445. 
Rdinburgh, observations on the former 
existence of glaciers near, 336. 
Edington (Mr.), notice of, in’ the Presi- 
dent’s Address for 1842, 639. 
Egerton (Sir P.), on Cheirotherium Her- 
cules, 14; on impressions of Cheiro- 
therium in aslab of sandstone in Ches- 
ter, 100; on triassic fishes in British 
strata, 409. 
Egypt, Lieut. Newbold on the geology of, 
782. 
Egyptian jaspers, Mr. Bowerbank on the 
microscopic structure of, 435. 
Hifel, Prof. Sedgwick and Mr. Murchison 
on the structure of the, 307. 
Ulectric currents, notice of experiments 
on, in Pennance mine, 755. 
Elephant, notice of remains of, found in 
Mexico, 705. 
Hlevation, Mr. Hopkins on the, of the lake 
district, 787 ; on the theory of, 759. 
Elie de Beaumont (M.), and Dufrénoy 
(M.), letter from, on presenting the 
Society with a copy of their map of 
France, 588. 
England, evidences of the former exist- 
ence of glaciers in, by Prof, Agassiz, 
327; by Dr. Buckland, 349. 
