810 
Mauritius, notice of blocks of coral rock 
in the interior of, 317. 
Meetings, Special General, notices of, to 
consider articles of agreement by which 
Mr. Greenough proposed to transfer the 
copper-plates of his map to the So- 
ciety, 156 ; to pass a bye-law to enable 
British subjects resident in British 
colonies to be nominated as candidates 
for election, 186; to extend the ses- 
sion beyond one evening of meeting in 
June, 388. 
Megatherium, observations respecting its 
supposed bony covering, 112. 
Messina, notice of lignite near, 322. 
Metalliferous rocks, account of, on 
the flanks of the Ural mountains, 
747. 
Metamorphic rocks, aceount of, in tne 
Ural mountains, 747. 
Miller (Mr.), on fish-beds in the old red 
near Cromartie, 124. 
Missourium, report on the, by Mr. Owen, 
689 ; Mr. Nasmyth on the peculiarities 
of the tusk of the, 779. 
Mitchell (J. LL.D), on drift in Norfolk, 
Suffolk, &¢., 3; on wells in gravel and 
London clay in Essex, 13]; on out- 
bursts of water from the chalk, 134 ; 
on foul air in chalk and strata above 
the chalk near London, 151]. 
Mocha stones, Mr. Bowerbank on the 
microscopic structure of, 435. 
Model, description of a, of Arthur’s Seat, 
448 
Models, Mr. Sopwith on the illustration 
of geological phenomena, by, 251. 
Mohs (Prof.), notice of, in the President’s 
Address for 1840, 262. 
Montreal mountain, notice of marine — 
shells on, 769. 
Moore (Edw. M.D.), on the fossil bones 
found on araised beachnear Plymouth, 
589. 
Moore (J. C. Esq.), on the rocks of the 
west shore of Loch Ryan, 277. 
Morris (Mr.), reply of, to the President, 
on receiving the award of the Wollas- 
ton proceeds, 635. 
Morton (Dr.), notice of his work on the 
eretaceous fossils of the United States, 
737. 
Moschus, observations on supposed re- 
mains of, in the Isle of Wight, 2. 
Moss agates, Mr. Bowerbank on the 
origin and microscopic structure of, 
and other siliceous bodies, 481. 
Mount Gebeel Suneen, enumeration of 
strata composing, 291. 
Mourne mountains, Prof. Sedgwick on 
the structure of the, 559. 
INDEX. 
Mundesley, Mr. Lyell’s account of the 
freshwater deposit at, 174; remarks 
on the fossil fishes of, 862. 
Murchison (R. I. Esq.), address on an- 
nouncing the award of the Wollaston 
medal to M. de Buch, 633 ; on present- 
ing the proceeds of the fund to Mr. 
Morris, 635. 
Anniversary Address, Feb. 18, 1842, 
637 ; introductory remarks, 637 ; no- 
tices of deceased fellows, 637; Sir 
Francis Chantrey, 637; Mr. Bowman, 
638; Mr. Edington, 639; Mr. Snow, 
639; Dr. Yelloly, 689; Mr. M°Hnery, 
640; review of memoirs on Paleozoic 
ceology as connected with the Silurian, 
Devonian, and carboniferous systems, 
&c., 640; observations respecting Mr. 
Philips’s work on the palzozoic fossils 
of Devonshire and Cornwall, 6463; on 
Mr. Lyell’s communication on Silurian 
strata near Aymestry and Wenlock, and 
near Christiania, 649; Mr. D. Sharpe’s 
paper on Westmoreland, 650; on Mr. 
Miller’s book, entitled, ‘ New Walks in 
an Old Field,’ 650; remarks on Mfr. 
Pander’s discovery of ichthyolites at 
Dorpat, 651; account of paleozoic 
discoveries in secondary formations, by 
Mr. Owen, 652; by Dr. Mantell, 653 ; 
Sir Philip Egerton, 653, Mr. Strickland, 
654, Mr. Trimmer, 655; review of Mr. 
Lyell’s memoirs on the-tertiary deposits 
of the Cotentin and Leire, 655; and on 
parts of North America, 656; account 
of microscopic researches by Prof. 
Ehrenberg, M. d’Orbigny, and Mr. 
Bowerbank, 657-659 ; notices of pro- 
vincial geological societies, 659; ob- 
servations on the labours of Prussian 
geologists, 660; Russian geologists, 
663; remarks on the recent researches 
of the author, M. de Verneuil, and 
Count de Keyserling in Russia, 665; re- 
marks on the geological map of France, 
by MM. Dufrénoy and Elie de Beau- 
mont, 666; on M. Alcide d’Orbigny’s 
‘ Paléontologie Francaise,’ 668; on the 
completion of the map of Belgium by 
M. Dumont, 670; review of the glacial 
question, as discussed by MM. Agassiz, 
Necker, 671; Godeffroy, 673 ; Mac- 
laren, 674, 681; Bowman, 676; Dr. 
Buckland, 676; notice of MM. de 
Bohtlingk and Sefstrém’s observations 
on furrows, 678; of M. Durochier’s ac- 
count of erratic blocks, 678, 684, note; 
notices of Capt. J. Ross’s account of 
glacial phenomena in the Antarctic: 
Ocean, 681; remarks on the ‘opinions 
respecting the action of ice entertained 
