CONTENTS. Vv 
i, : Page 
_ Mr. T. J. Pearsart on the Action of Water upon Lead.........csccscerseeee 5S 
Mr. J. Dick on a New Form of Iron Bottle far obtaining Oxygen Hot 
Peroxide of Manganese. ..... Vavosvadsene MoOatsdvecnesedce suds datos Pcteevess LOS 
Mr. W. Brack on the Influence of Electricity on ‘the Process of Brewi ing. 58 
; pss GEOLOGY. 
3 Mr. James Yares’s Notice of Specimens containing Fossil Vegetables, 
____ from the New Red Sandstone at Stanford and Ombersley, in Worces- 
SS teh ap acensdaresnaescarecoe sesanoschakecegna: acauendaaasssadetaner tesa peeaeacapy 
_ Mr. Hue E. Srricktanp on the Nature and Origin of the various kinds 
__of Transported Gravel, occurring in England. ......... Saneaeeetetatrccmaaae 61 
- Mr. Rozrrr Matter on ‘the Mechanism of the Movement of Glaciers.... 64 
_ Marquis Srrnero on the Results of Trials which had been made for Water 
in the Desert between Suez and Cairo ......sccscsscsscsscsecsteccseeceeceess 66 
_ Mr. Cuartes Lyext on certain Phenomena connected with the Junc- 
tion of Granitic and Transition Rocks, near Christiania in Norway, 
(communicated by L. Horner, F.R.S.) ......csscseceececesenseees Sesttnceothe 67 
Dr, Trait on the Geology of Spain Beco esp aekpadsransspccnansnecesiteccer eens 70 
Mr. W. J. Henwoop on some Intersections of Veins in 1 the Mines of Dolcoath 
and Huel Prudence, in Cornwall, and on their bearing on the Theory of 
the Mechanical Origin of their (« heaves’’) Dislocations .........0.0. 74 
Dr. W. H. Croox on the Unity of the Coal Deposits of England and 
BG sates deca ncenecesasecs. css nesev pane tate wantesseence necmennen nse tcnnataimente 75 
Professor S—pGwick’s Notice of an Incursion of the Sea into the Gants 
ERGO LO Va danaac tan cnaansancacdssececraccssrceestschcasassresaecenas caer eens 75 
_ Mr. Jouy Ham on the Mud deposited by the Tidal Waters of fis Severn, 
Usk, and Avon, and other phenomena connected with the Waters of 
os LOR eR eI SEE a 76 
_ Mr. James Heywoop on the Geology of ‘the Coal District of ‘South Lan- 
(1 ya dct nec alee poe co eerie aR oda aid ale aN Ra AED 77 
Mr. W. C. Witttamson on the Coal- Measures of West Lancashire ...... 81 
‘Mr. Witi1am Peace on the Dislocations of the Coal Strata in Wigan and 
RMR RNCTME eS eicencledads dean ra weadpaee eects cosars ani penese senses cassie §2 
Mr. Locan on that part of the South Welsh Coal Basin which lies between 
the Vale of Neath and Carmarthen Bay. In explanation of a geolo- 
gical map of the district, laid beat by the author on the sheets of the 
BMOTOMAICE SULVCY s.c.ccscnsont¥ecicnts@ranccsccocancens coecccedaentarssresescmeciene 83 
‘Captain Denuay, R.N., on the Tidal Capacity of the Mersey Estuary— 
the Proportion of Silt held in solution during the Flood and Ebb Cixcula- 
tions—the Excess of Deposit upon each Reflux, and the consequent 
_ Effect produced by the Matter thus detected in its transit, and measured 
Bh at its lodgement, on the banks in Liverpool Bay; with Diagrams pereeiam, Sei 
Mr. J. Surrn on the Changes which have taken place in the Levels of 
(BEES (2b eae JASRRABERBRBRBB ESE Ga: > -cesteBach acai e “Ree SCE ad aacHaseE Peres 87 
Captain Porriocx on an Apparent Analogy between the New Red Sand- 
Btone of Breland and Treland) coves s:.2.ccssestcaccocenervocccstsecccscnaccossces 88 
_ Mr. R. Grirrirn on the leading features of the Geology of Ireland, and 
_ more particularly the situation and extent of the great Carboniferous or 
Mountain Limestone district, which occupies nearly two-thirds of the 
‘ (SLR Made spell Saeed ami asa 6 shen NaN ac ae ata Mahl la Sila 7 88 
‘Mr. Murcutson on the Fishes of the Ludlow Rocks, or Upper Beds of the 
Bee Silurian Systern | .............scssseeennsese sasadiae'cis ¢aiv e's gaptanscamsoss ade ub 
_ Mr. W. Hopxtns on the Refrigeration of the Earth spcvasemael 91 
Rey. W. D. Crarxe on the Phzenomena exhibited by the Plastic Clay For- 
mation in the vicinity of Poole, Dorsetshire ....ssecocssesssessceessesevenss 9S 
