CONTENTS. ix 
Page 
Dr. T. L. Pureson on a New Method of Measuring the Chemical Action of 
cua Siite TR Re Ber oc or ot > enc Canepa eae. ae kine ba cc ea i 50 
on Musical Sounds produced by Carbon.............45: 50 
——____———— on the Constant Increase of Organic Matter in Cultivated 
litt 2 Uo lo ipoc te Une .c nic epic as Goo cain ois rah d ranenr a heen 51 
The late Mr. Joun Lex’s, and Dr. THomas RicHarpson’s Researches on the 
Manufacture of Prussiate of Potash ........2-.2-e2cc rr cccnasercsevens 51 
Dr. Tuomas RicHarpson on the Separation of Lead and Antimony ...... 52 
and Mr. T. W. Bunnine on the Use of Fuel in 
VIG RETO LGN Seta cst oye)' o's are ofayn'o Kale 6 0\0'S 4 gieig gis a'k5 4 Srepe een RMS Oar 53 
——, Analysis of a Deposit from a Colliery Water con- 
taining Sulphate of Baryta ........ecceeee eect eee e ene nnce ees eenees 54 
Dr. Orro RicHTeER on the Chemical and Physical Principles in connexion 
with the Specific Gravity of Liquid and Solid Substances .............. 54 
Sibel FRING OTe LUGATIUTIN ITE GET OT Fs e; ah oisic) ojevesels are) eletshers)oie)s)aetelolalstatolelel sa olale\els 55 
Mr. R. W. SwInBOURNE on Glass ......:cccsccceccevcveeeersetensenee 55 
Mr. W. Symons on a New Form of Gas-Battery ....... 0c: cscs eee cece 56 
Dr. Murray THomson on the Composition of some New Zealand Lignites.. 56 
M. G. Vitx, Définer par la Végétation l’état moléculaire des Corps. Ana- 
lyser la Force végétale par des Essais raisonnés de Culture ...........+.. 57 
Professor WANKLYN on the Oxidation of Beta-Hexylic Alcohol............ 57 
——____________ 9n Fractional Distillation ....7 2.0.1... .seesseeeees 58 
ireienWw oop on Oxidanion by OZONE .1..:.. . ceame ocjas v0.0 Wle,6.s,0,0,0)0 ofere )oesale 58 
Dr. ZENNER on Impurities in Lead and Molecular Motion ..............+. 58 
GEOLOGY. 
Address by WarineTon W. Smyrtu, M.A., F.R.S., F.G.S., President of the 
SIRUED a a Se RR PRE De Se Comes mi a ae TEI 59 
Professor D. T. ANsTED on the Metamorphic Origin of the Porphyritic Rocks 
PHMOMA MED TO US ORCRG cris crevete ctacsnt wlats areleleceeelee Aehateevelece o.ecesdvenes ober pitels 64 
—_—_— on a Deposit of Sulphur in Corfu ............00- 64 
Mr. C. Arrwoop on some Facts observed in Weardale ..........-.+0e0e 64 
Mr. W. BaryeripGe on the Pennine Fault in connexion with the Volcanic 
Rocks at the foot of Crossfell ; and with the Tyndale Fault, called “ The 
meee, LPH: oi wcis noite ae. bs sine eypinse 8 geo atime abun SeNede lols 64 
Rey. James Bropie on the Physical Condition of the Earth in the Earlier 
PACH BEE: EADSUOT Yo. oo a on win snssibe eng: P anaynnn apielp ile mala Wis iaie[tialales ob 9. 67 
Mr. ALEXANDER Bryson on Artificially produced Quartzites.............. 67 
Mr. J. AtexanpER Davies on the Causes of Harthquakes and Volcanic 
PRINTS, ori oa» ojninyann ss, o)8iss0ye,#)2» 0) 0,0;5-4.9,5 + nin orulfuipy ee aisle ara.) shesalalnyo/ a auale TR 67 
Dr. Dawson on two new Coal-plants from Nova Scotia .............0006. 67 
Mr. W. Marruias Dunn on the Relations of the Cumberland Coal-field to the 
RUSHES AMOS terre re sue tye ia oa 8 oe. 3 94-000 0s, ane taiace ake cis) ein, elofshensh he shivers) aleid 68 
Dr. Gernitz on a Salamander in the Rothliegendes .................00 0 68 
Mr. R. A. C. Gopwin-AvsTEN on the Alluvial Accumulation in the Valley 
of the Somme and of the Ouse 
