x CONTENTS. 
Dr. ANDREWS on an Aspirator .....5... an OMe fiiaeie ns fe ws He sense 
Mr. I. Lowrutan Bett on the Joint Action of Carbonic Acid and Cyanogen 
on Oxide of Iron and on Metallic Tron. ss. . cise sete cies tee eee ciate arhidat 
Mr. P. Brawam and Mr, J. W. GATEHOUSE on the Dissociation of Nitrie Acid 
ay cVATLOUS AM CRTIA Mepis ns Bint Hinets Sialets ise ot 81s anand t lista Sitaram 
— on a Mode of producing Spectra on a Screen with the Oxy- 
hydrogen lame... .mn aio yaer sia sine Pe ahs aisine wis ease eee pe tule 
Professor Crum Brown on the Mode of writing Chemical Equations ...... 
—— and Dr. E.-A. Lerrs on Methyl-thetine ....... ae 
Dr. W. B. CarpENTER on the Replacement of Organic Matter by Siliceous 
Deposits in the Process of Fossilization ............ Rdoede tc x Sera 
Mr, Witt1am CHarzey on the Injurious Effects of Dew-rotting Flax in cer- 
(aie. Gaseh las ¢ ibo Du Oa De OO On Ono OOo OO Or OT” Be koe oe tp c 
Professor CLIFFORD on the General Equations of Chemical Decomposition . . 
Mr. W. J. Cooprr on the Composition of certain Kinds of Food ...... odo 
Professor DeBus on Spontaneous Generation from a Chemical Point of View. 
Professor DELFFS on an Aspirator ......ss.seeeoeee Scio a sie tenn eteratets 
Dr. Dewar on the Latent Heat of Liquefied Gases ..........eccceeeeeess 
Mr. Toomas Farrury on Chlorine, Hypochlorous Acid, &c., and Peroxide of 
TER teers oineeg chtcind Leoni: OOMOnr Ege Ik Licchbion Gta OC ore ave cic 
Professor GLApsTONE and Mr. AuFRED TrRisn’s Electrolytic Experiments on 
some. Metallic Chlorides:: 2255 sviaads reves cissrnioeecnsc shee ty Oe eee 
on the Composition of ‘Tea and Tea-soils from Cachar. . 
— on the Composition of the Fibre of the J ute-plant, and its 
USO sas POX GILG MM AGCLIA cea, o,5°01/eaplae cc anaes 8p 205-0 a%e) s1¢.8 aiale hier e ieee RO 
Mr, W. Jesse Lovett on an Improved Vacuum Filter-pump............4. 
Mr. T. R. Ocrivre on the Estimation of Phosphoric Acid as Pyrophos- 
phate of Magnesia ....... ccs eeseeeeeessnsees ols) o/b iae 0 61sie eial ety see 
Dr, T. L. Pureson on a Sesquisulphide of Iron ........00..eceeeevees rates 
= — on the Presence of Cyanogen in Commercial Bromine, and 
a means of detecting it ...... ichiichc Nos .n.0 biokG Se oR t RARER oe obfee hee 
Professor Emerson REYNOLDS on the Preparation of the Sulphur-urea 
——__—_—___—_—— on the Action of the Sulphur-urea in Metallic 
SOMMIONSy tei cet ee erecta eR Relom ines aime tain Sd Sele els, Saree mre 
Professor Roscox on a Self-registering Apparatus for Measuring the Chemical 
AN GHERIOL GIS bt eee AER ets eee Sarina sree te ids SAL cote eee ais 
— on certain Abnormal Chlorides,.........:c00cecueees 52 
Professor MAaxwELL Simpson on the Chlor-Bromides and Brom-Iodides of the 
IDIGRTICR cis cits ae otic seit ochd cae Sa A ond cabl Thao icheeeachoncacket chs Apert msc: eae 
Professor THORPE on the Specific Volumes of certain Liquids ............ 
Dr. C, R. WRiGHr on some Opium Derivatives, oo... scvsevecsevvnenan 
GEOLOGY. 
Address by Professor Epwarp Hutt, M.A., F.R.S., F.G.8., President of the 
" Section 500 6G, 8 @ 908 8 Fe 8.0 6 6 8 88 CO 8 On clare e888 0 ¢'e 8 ee eter e Or on Wie © a mee 6 seen 
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