Researches on the Action of Sulphuric Acid upon the Amides and 

 Nitriles, with Remarks on the Conjugate Sulpho-acids. By George 

 B. Buckton, Esq., F.L.S., F.C.S., and A. W. Hofmann, Ph.D., 

 F.R.S page 158 



On Quantitative Measurement in Statical Electricity, and on some 

 new Phenomena of Electrical Force. By Sir William Snow 

 Harris, F.R.S " 166 



On Colour Blindness. By William Pole, Esq., F.R.A.S., F.G.S., 

 Memb. Inst. C.E 172 



Researches on the Velocities of Currents of Air in Vertical Tubes, 

 due to the presence of Aqueous Vapour in the Atmosphere. By 

 W. D. Chowne, M.D 177 



On the Thermal Effects of Fluids in Motion. By J. P. Joule, Esq., 

 F.R.S., and Prof. W. Thomson, F.R.S 178 



On the Stability of Loose Earth. By W. J. Macquorn Rankine, Esq., 

 C.E., F.R.SS. L. & E., Regius Professor of Civil Engineering and 

 Mechanics in the University of Glasgow 185 



On the Geometrical Isomorphism of Crystals. By Henrv James 

 Brooke, Esq., F.R.S., Hon. M.C.P.S. &c ." ... 187 



On some Compounds of Ethylene. By H. L. Buff 188 



Description of an Instrument for registering changes of Temperature. 

 By Balfour Stewart, Esq 195 



Researches on Organo-metallic Bodies. Third Memoir. On a New 

 Series of Organic Acids containing Nitrogen. By Edward Frank- 

 land, Ph.D., F.R.S 198 



On the Action of Urari and of Strychnia on the Animal Economy. 

 By Prof. Albert Kblliker of Wurzburg 201 



Researches on the Foraminifera. Part II. By William B. Carpenter, 

 M.D., F.R.S., F.G.S. &c 205 



Electro-Physiological Researches. Tenth Series. Part I. By 

 Signer Carlo Matteucci, Professor in the University of Pisa. . . 209 



On the Existence of Multiple Proportion in the quantities of Heat 

 produced by the Chemical Combination of Oxygen and other bodies. 

 By Thomas Woods, M.D 211 



Researches into the nature of the Involuntary Muscular Fibre. By 

 George Viner Ellis, Esq., Professor of Anatomy in University Col- 

 lege, London 212 



Account of the Construction of a Standard Barometer, and of the Ap- 

 paratus and Processes employed in the Verification of Barometers 

 at the Kew Observatory. By John Welsh 214 



On the Aurora. By Reuben Phillips, Esq 214 



On the Lunar-Diurnal Magnetic Variation at Toronto. By Major- 

 General Edward Sabine, R.A., D.C.L., Trcas. and V.P.R.S. . . 216 



On Autopolar Polyedra. By the Rev. Thomas P. Kirkman, M.A. . 217 



