i INDEX. 
by Prof. Hitcheock, 683; by ‘ Peter 
Dobsen,” 686. Conclusion, 686. 
Murchison (R. I. Esg., as President) 
letter in reply to one received from 
MM. Dufrénoy and Hlie de Beaumont 
on presenting the Society with a copy 
of their map of France, 588. 
——_____—_—— on fossils from 
the State of New York, 416; on the 
salt steppe south of Orenburg, and 
a remarkable freezing cavern, 695; on 
the Tehornoi Zem, or black earth of 
Russia, 712. 
Murchison (R. I. Esq.), de Verneuil (M. 
E.), on the northern and central por- 
tions of Russia in Europe, 398. 
——_—- (R. I. Esq.), de Verneuil (M.), 
and Keyserling (Count de), account by, 
of a second geolegical survey of Russia 
in Europe, 717; on the structure of 
the Ural mountains, 742. 
Murchison (R. I. Esq.), and Sedgwick 
(Rey. Prof.), on the classification of 
the older rocks of Devonshire and 
Cornwall, 121; on the distribution and’ 
classification of the older or paleeozoic 
deposits of the north of Germany and 
Belgium, and their comparison with 
formations of the same age in the Bri- 
tish Isles, 300. 
Museum committees, reports of, 1839, 42; 
1840, 191; 1841, 368; 1842, 610. 
donations to, between the An- 
niversaries 1838 and 1839, 45; 1839 
and 1840, 194; 1840 and 1841, 3738, 
1841 and 1842, 620. 
——— lisisof fossils presented to, 436, 
444, A467, 559-564, 594. 
Nantel, Dr. Buckland on glacial action 
in the valley of the, 582. 
Nantes, Mr. Lyell on the faluns near, 
440. 
Nasmyth (A. Esq.), on the minute struc- 
ture of the tusks ef Mastodontoid ani- 
mals, 775. 
Necker (L. A. Esq.), on a probable cause 
of certain earthquakes, 37. 
Newbold (Lieut.), on rock basins in the 
bed of the Toombuddra, 702; on the 
geology of Egypt, 782. 
New York, account of the formations in 
/ the State of, 416. 
New red sandstone, notice by Mr. Ottley 
of concretions in, supposed to be Alcy- 
onia, 298; remarks by Prof. Sedgwick 
on the, of England and Scotland, 345. 
Newer pliocene, Rey. D. Landshborough’s 
description of, in Ayrshire, 444. 
‘period, on the climate of 
the, 118. 
Newer red formation in Russia, notice 
of; 403. 
81] 
Niagara, Mr. Lyell on the recession of 
the Falls of, 595, 598. 7 
— district, Mr. Lyell on the struc- 
ture of the, 595. 
= group, notice of the, 596. 
Nile, remarks on the mud of the, 790; 
on the delta of the, 79]. 
Nordenskiold (Prof.), on furrowed rocks 
in Finland, 410. 
Norfolk, Mr. Lyell on the age of the 
crag of, 126; Mr. Trimmer on the de- 
trital deposits of part of, 185, 
North Carolina, account of eretaceous 
and tertiary formations in, 736. 
North of Germany and Belgium, Rey. 
Prof. Sedgwick and Mr. Murchison on 
the older or palzeozoic deposits of, and. 
comparison of them with formations of 
the same age in the British Isles, 301. 
Northumberland, description of moraines 
in, 346. 
Norwich crag, notice of, in Eastern Nor- 
folk, 173. 
Nova Seotia, 
of, 707, 711. 
Ochil hills, notice by Capt. Pringle re- 
specting the, 796. 
Officers, list of, and council for 1889, 60; 
1840, 268; 1841,887; 1842, 636. 
Ogilby (W. Hsq.), on the presumed mar- 
supial remains from the Stonesfield 
slate, 21. ; 
Ogwyn, Dr. Buckland on glacial action 
in the valley of the, 581. 
Old red sandstone, Mr. Miller on thie, of 
Cromartie, 124; Dr. Malcolmson, de- 
scription of the, in the counties of 
Moray, Nairn, Banff, and Inverness, 
141; Mr. Murchison, M. de Verneuil 
and Count Keyserling on the, of Russia 
in Europe, 400, 719; Prof. Sedgwick, 
remarks on the, of Ireland, 547; Mr: 
Sharpe on the, of Westmoreland, 605. 
Onondago salt group, notice of the, 596. 
Ontario group, notice of the, 597. 
Oolites, Mr. Bowerbank on the siliceous 
bodies of the, 278. 
Oolitic series, account of, in Huropean 
Russia, 403. 
Orenburg, on the salt steppe south of, 695. 
Organic remains,—see birds, insects, 
shells, &c., fossil. 
Orthoceras, Mr. Austen onthe position of; 
—andot Ammonites, and other cognate 
cenera, in the animal kingdom, 179. 
Ottley(Mr. ),on specimens of new red sand- 
stone considered to be Alcyonia, 298. 
Owen (R. Esq.), on remains of Palzeothe- 
rium, Anoplotherium, &ce. from the Isle 
of Wight, 1; on the-Thylacotherium 
Prevostii, 5; on the Phascolotherium, 
17; on the Zeuglodon, 24; on the 
account of the coal-fiela 
