VI 



Page 



On the frequent occurrence of Phosphate of Lime, in the crystalline 

 form, in Human Urine, and on its pathological importance. By 

 Arthur Hill Hassall, M.D 281 



On the Saccharine Function of the Liver. By George Harley, M.D. 289 



Hereditary Transmission of an Epileptiform Affection accidentally 

 produced. ByE. Brown-Sequard, M.D. , F.R.S 297 



On the Resin of the Ficus rubiginosa, and a new Homologue of Ben- 

 zylic Alcohol. By Warren De la Rue, Ph.D., F.R.S., and Hugo 

 fuller, Ph.D., F.C.S 298 



Analytical and Synthetical Attempts to ascertain the cause of the 

 differences of Electric Conductivity discovered in Wires of nearly 

 pure Copper. By Professor William Thomson, F.R.S 300 



On a new Method of Substitution; and on the formation of lodo- 

 benzoic, lodotoluylic, and lodanisic Acids. By P. Griess, Esq. . . 309 



Description of an Instrument combining in one a Maximum and Mi- 

 nimum Mercurial Thermometer, invented by Mr. James Hicks. 

 By Balfour Stewart, Esq 312 



On the Expansion of Metals and Alloys. By F. Crace-Calvert, Esq., 

 F.R.S., and G. Cliff Lowe, Esq 315 



Measurement of the Electrostatic Force produced by a Darnell's 

 Battery. By Professor William Thomson, F.R.S 319 



Measurement of the Electromotive Force required to produce a Spark 

 in Air between parallel metal plates at different distances. By 

 Professor W. Thomson, F.R.S 326 



On the Lines of the Solar Spectrum. By Sir David Brewster, K.H., 

 D.C.L., F.R.S., and Dr. J. H. Gladstone, F.R.S 339 



On some New Volatile Alkaloids given off during Putrefaction. By 

 F. Crace-Calvert, Ph.D., F.R.S. &c 341 



On the Electrical Phenomena which accompany Muscular Contrac- 

 tion. By Professor C. Matteucci 344 



An Inquiry into the Muscular Movements resulting from the action 

 of a Galvanic Current upon Nerve. By C. B. Radcliffe, M.D 347 



Letter from Lord Howard de Walden and Seaford, on a recent severe 

 Thunder-storm in Belgium 359 



On the Solar-diurnal Variation of the Magnetic Declination at Pekin. 

 By Major-General Edward Sabine, R.A., Treas. and V.P.R.S. . . 360 



Analysis of my Sight, with a view to ascertain the focal power of my 

 eyes for horizontal and for vertical rays, and to determine whether 

 they possess a power of adjustment for different distances. By 

 T. Wharton Jones, Esq., F.R.S 381 



On the Light radiated by heated Bodies. By B. Stewart, Esq 385 



On the Luminous Discharge of Voltaic Batteries, when examined in 

 Carbonic Acid Vacua. By J. P. Gassiot, Esq., F.R.S 393 



