x CONTENTS, 
Professor G. Wiuson on the Processes for the Detection of Fluorine ...:....4... 
Dr. T. Woops on the Time required by Compounds for Decomposition......... 
GEOLOGY. 
Mr. Rosert Gopwin-Austen’s Notice of the occurrence of a Boulder of Gra- 
nite in the White Chalk of the South-east of England ..........essseseseseeeseeee 
Mr. W. H. Barry on Carboniferous Limestone Fossils from the County of 
Limerick, collected by the Geological Survey ......:...sss+ecseccsscecereceeteteceees 
—_—__—_————_ on a New Fossil Fern from the Coal-Measures near Glin, 
Wonntyy Wiumerick:..<.tverecce.caset: icABncoonsebseesceey eaoii tba toventos cas coseCen cane 
Mr. J. BirmincHaAm on the Drift of West Galway and the Eastern parts of 
IGN Gre ctecstsceactsqvs sect -Csacscuyetecaesecsassanceeccsess cous secestnccccanes’ aan" tate 
Dr. Cuarxe on certain Alterations of Level on the Sea-coast of part of the 
County of Waterford, and the cause thereof ..............sssesscoscsnacsecseresees 
Mr. F. J. Foor on the Geology of the Neighbourhood of Tralee............-.se0s- 
Sir Ricuarp GrirriTH on the Relations of the Rocks at or below the base of 
the Carboniferous Series Of lrelandcscctscesaccca-cseccescccectescccccccccnedesacsouaee 
Mr. G. F. Hasersuon’s Notes from the Barbary Coast, with Fossils. (Com- 
municated by Dr. GLaDsTONE.) ...... Se dace cs=escatencvec=va=sacsouceessA Weureeeeene 
Professor Harkness on the Geology of Caldbeck Fells, and the Lower Sedi- 
mentary Rocks of Cumberland ......sseeeeseeeeeeeee sasnncoweotcouced sceheteten seceeces 
—_—________—— on the Jointing and Dolomitization of the Lower Carbon- 
iferous Limestone in the Neighbourhood of Cork ....... gasufsdvecs cede: seeemeesaee 
on the Records of a Triassic Shore ......:.c..seseteseescesees 
Rey. Professor Haucuton on a Model illustrative of Slaty Cleavage...... Seana 
on Fossil Stems allied to Stigmaria, recently obtained 
from the Upper Beds of the Old Red Sandstone of Hook Point, Gana of 
WVExtOTUUsscscacssncessuedesslessiaasenl shapieastesssaess daecasse Spit cst laciees haan cosuceus 
Professor HENNEssy on the Existence of Forces capable of changing the Sea- 
level during different Geological Epochs..........ssssssseeeececeeenees eoodtiannacs ae 
Mr. Wiii1am Horxrins on the Conductivity of various Substances for Heat. 
Mr. J. Bente Juxes and Mr. G. V. Du Noyer on the Geological Structure of 
the Dingle Promontory, Co. Kerry ........cseccssssscascescencaessseecasseesceoeeens 
Notes on the Old Red Sandstone of South Wales...... sea 
Messrs. Jukes and Du Noyer on the Geology of Lambay Island ............... 
Mr. G. H. Krnanan on the Valentia Trap-District 6:4... c.....0088 Sebsseds aR 
Professor, J. R. Kinanan on the Zoological Relations of the Cambrian — 
of Bray Head and Howth....... ds sadss ucts arsaeesstecte anzeanecesa comncho sks. Gergen 
Professor Kine on the Relation between the Cleavage of Minerals and the 
Cleavage of Rocks i...i.cisseccsscecsecseeseoescesenes SfastitacwsstesSeascbed ois renee 
Mr. J: O. Kexry on a Section across Slieve-na-Muck, Co. Tipperary..........+« 
Professor L. b# Koninck and Mr. Epwarp Woop on the genus Woodocrinus 
Professor Car. G. Menecuint’s Notice of the recent Advances of Paleontolo- 
gical Discovery in Tuscany .......ccsscsececeseseeeessees sbasdescvecoseseekenee Usb esaees 
Sir Roperickx I: Murcuison on the Quartz Rocks, Crystalline Limestones, 
and Micaceous Schists of the North-western Highlands of Scotland, proved 
to be of Lower Silurian Age, through the recent Fossil discoveries of 
Mr. OF; Peach? eeenee beeteeene bade eeeeeeeeetes eee eeeeenee Peete wteanee dete eeeemeeeenere eee 
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