vi 



On the Magnetic Elements and their Secular Variations at Berlin, as observed 

 byA.Ernian 218 



On the Action of Chlorine upon Methyl. By 0. Schorlemmer, Assistant in 

 the Laboratory of Owens College, Manchester 225 



On the Calculus of Symbols (Fifth Memou'), with Applications to Linear 

 Partial Difierential Equations, and the Calculus of Functions. By W. H. 

 L. Eussell, A.B 227 



Second Part of the Supplement to the two Papers on Mortality published 

 in the Philosophical Transactions in 1820 and 1825. By Benjamin 

 Gompertz, F.K.S 228 



Investigations of the Specific Heat of Solid and Liquid Bodies. By Hermann 

 Kopp,Ph.D 229 



On some Foraminifera from the North Atlantic and Arctic Oceans, includ- 

 ing Davis Strait and Baffin Bay. By W. Kitchen Parker, F.Z.S., and 

 Professor T. Rupert Jones, F.G.S 239 



Note on the Variations of Density produced by Heat in Mineral Substances. 

 By Dr. T. L. Phipson, F.C.S 240 



On the Spectra of some of the Fixed Stars. By W. Huggins, F.II.A.S., and 

 WiUiam A. MUler, M.D., LL.D., Treasurer & V.P.R.S 242 



A Second Memoir on Skew Surfaces, otherwise Scrolls. By A. Cayley, 

 F.R.S 244 



On the Dififerential Equations which determine the form of the Roots of 

 Algebraic Equations. By George Boole, F.R.S., Professor of Mathe- 

 matics in Queen's College, Cork 245 



A Comparison of the most notable Disturbances of the Magnetic Declination 

 in 1858 and 1859 at Kew and Nertschinsk, preceded by a brief Retrospec- 

 tive View of the Progress of the Investigation into the Laws and Causes 

 of the Magnetic Disturbances. By Major-General Edward Sabine, R.A., 

 President of the Royal Society 247 



On the degree of uncertainty which Local Attraction, if not allowed for, 

 occasions in the Map of a Country, and in the Mean Figure of the Earth 

 as determined by Geodesy : a Method of obtaining the Mean Figure free 

 from ambiguity by a comparison of the Anglo-Gallic, Russian, and Indian 

 Arcs : and Speculations on the Constitution of the Earth's Crust. By 

 the Venerable J. H. Pratt, Archdeacon of Calcutta 253 



Annual Meeting for the Election of FeUows 276 



Description of the Cavern of Bruniquel, and its Organic Contents. — Part I. 

 Human Remains. By Professor Richard Owen, F.R.S 277 



On Complex Binary Quadratic Forms. By H. J. Stephen Smith, M.A., 

 F.R.S 278 



Inquiries into the National Dietaiy. By Dr. E. Smith, F.R.S 298 



On some Varieties in Himian Myology. By John Wood, F.R.C.S 299 



Researches on Isomeric Alkaloids. By C. GreviUe Williams, F.R.S 303 



On the Synchronous Distribution of Temperatui'e over the Earth's Surface. 

 By Henry G. Hennessy, F.R.S 312 



