IV CONTENTS OF VOL. XXII. FIFTH SERIES, 



NUMBEE CXXXV.— AUGUST. 



Mr. W. Sutherland on the Law of Attraction amongst the 



Molecules of a Gas 81 



Prof. E. Shida on a new Instrument for continuously record- 

 ing the Strength and Direction of a Varying Electric 



Current. (Plates II. & III.) 96 



Prof. W. Ostwald's Electrochemical Eesearches 104 



Mr. O. Heaviside on the Self-induction of Wires 118 



Mr. H. Cunynghame on a new Hyperbolagraph 138 



Mr. A. B. Basset ou the Induction of Electric Currents, in an 

 Infinite Plane Current Sheet, which is rotating in a Field 



of Magnetic Eorce 140 



Messrs. "W. Emmott and W. Ackroyd on an Electric-light 



Eire-damp Indicator 145 



Mr. E. J. Smith on certain Modifications of a Eorm of Spheri- 

 cal Integrator 147 



Prof. S. P. Langley on hitherto unrecognized Wave-lengths. 



(Plates IV.- VI.) 149 



Mr. A. Buchheim on an Extension of a Theorem of Prof. 



Sylvester's relating to Matrices 173 



Lord Eayleigh's Notes on Magnetism. — I. On the Energy of 



Magnetized Iron 175 



Prof. E. A. Letts and Dr. N. Collie on the Salts of Tetrethyl- 



phosphonium and their Decomposition by Heat 183 



Mr. John Aitken on Dew 206 



Mr. A. P. Laurie on the Electromotive Force of Voltaic 



Cells having an Aluminium Plate as one Electrode 213 



Prof. S. P. Thompson on a Mode of maintaining Tuning Forks 



by Electricity 216 



Proceedings of the Geological Society : — 



Prof. T. M c Kenny Hughes on some Perched Blocks and 



associated Phenomena 220 



Dr. C. Callaway on some derived Fragments in the Long- 



mynd and newer Archaean Eocks of Shropshire 221 



Mr. A. Strahan on the Eelations of the Lincolnshire 



Carstoue 222 



Mr. E. Gilpin, Jun., on the Geology of Cape-Breton Island, 



Nova Scotia , . . . . 223 



Mr. W. Whitaker on some Well-sections in Middlesex . . 223 

 Mr. H. M. Becher on some Cupriferous Shales in the 



Province of Houpeh, China 224 



Mr. W. H. Merritt on the Cascade Anthracitic Coal-field 



of the Eocky Mountains, Canada 224 



Dr. A. B. Griffiths on certain Eocene Formations of 

 Western Servia 225 



