CONTENTS, 



(A) 

 VOL. 205. 



List of Illustrations page v 



Advertisement . vii 



I. On the Normal Series satisfying Linear Differential Equations. By E. CUNNING- 



HAM, B.A., Fellow of St. John's College, Cambridge. Communicated by 

 Dr. D. H. F. BAKER, F.R.S page 1 



II. Memoir on the Theory of the Partitions of Numbers. Part III. By P. A. 



MACMAHON, Major P. A., Se.D., F.R.S 37 



III. Atmospheric Electricity in High Latitudes. By GEORGE C. SIMPSON, B.Sc. 



(1851 Exhibition Scholar of the University of Manchester). Communicated 

 by ARTHUR SCHUSTER, F.R. S. (51 



IV. The Halogen Hydrides as Conducting Solvents. Part I. The. Vapour 



Pressures, Densities, Surface Energies and Viscosities of the. Pure Solvents. 

 Part II. The Conductivity and Molecular Weights of Dissolved Substances. 

 Part II f. The Transport Numbers of. Certain Dissolved Substances. 

 Part IV. The Abnormal Variation of Molecular Conductivity, etc. By 

 B. D. STEELE, D.Sc., D. MC!NTOSH, M.A., D.Sc., and E. H. ARCHIBALD, 

 M.A., Ph.D. (late 1851 Exhibition Scholars). Communicated by Sir 

 WILLIAM KAMSAY, K.C.B., F.R.S. 99 



V. TJie Atomic Weight of Chlorine: An Attempt to determine the Equivalent of 



Chlorine by Direct Burning with Hydrogen. By HAROLD B. DIXON, M.A., 

 F.R.S. (late Fellow of Balliol College, Oxford), Professor of Chemistry, and 

 E. C. EDGAR, B.Sc., Dalton Scholar of the University of Manchester . . 169 



a 2 



