CONTENTS of N° 244— Fifth Series. 



303 



XIX. The Electrical Properties of Selenium. By Shelfoed 

 Bidwell, M.A., E.R.S page 233 



XX. The Measurement of Varying Currents in Inductive Circuits. 

 By Aleeed W. Poetee, B.Sc, Demonstrator of Physics, University 

 College, London, and David K. Moeeis, 1851 Exhibition Scholar, 

 University College, London 256 



XXI. On the Refraction and Dispersion of Liquid Oxygen, and 

 the Absorption Spectrum of Liquid Air. By Professors Liveing 

 and Dewae 268 



XXII. On the Critical Temperature of Hydrogen and the Theory 

 of Adiabatic Expansion in the Neighbourhood of the Critical Point. 

 By Dr. Ladislas Natajstson, Professor of Natural Philosophy in 

 the University of Cracow 272 



XXIII. The Measurement of Cyclically Varying Temperature. 



By Heney E. W. Bttestall, M.A., A.M.I.C.E. '(Plates I. & II.). . 282 



XXIV. On the Constituents of Cleveite G-as. By Professors 



C. Runge and E. Paschen", of Hannover 297 



XXV. The Variation in the Electrical Resistance of Bismuth, 

 when cooled to the Temperature of Solid Air. By James Dewae, 

 M.A., LL.D., E.R.S., Professor of Chemistry in the Royal Institu- 

 tion, &c, and J. A. Fleming, M.A., D.Sc, E.R.S., Professor of 

 Electrical Engineering in University College, London. (Plate V.). . 



XXVI. Notices respecting New Books : — Dr. Joseph Peestwich's 

 G-eological Inquiry respecting the Water-bearing Strata of the 

 Country around London, with Reference especially to the Water- 

 supply of the Metropolis ; and including some Remarks on Springs. — 

 Geological Survey of Canada, Annual Report, New Series, Vol. VI. 

 Reports A (1892), A (1893), J, Q, R, S, 1892-93 311, 312 



XXVII. Proceedings of Learned Societies : — 



Geological Society : — Major IT. de Haga Haig on the 

 Physical Eeatures and Geology of Mauritius ; Mr. W. S. 

 Gresley on Ice-plough Furrows of a Glacial Period ; 

 Sir H. H. Howoeth on the Shingle Beds of Eastern East 

 Anglia ;. Prof. W. J. Sollas on an Experiment to Illustrate 

 the Mode of Elow of a Viscous Eluid ; Mr. H. W. 

 Moncktoe" on the Stirling Dolerite ; Mr. J. Postlethwaite 

 on some Railway Cuttings near Keswick; Mr. D. Bell 

 on the Shelly Clays and Gravels of Aberdeenshire considered 

 in Relation to the question of Submergence ; Mr. G. S. 

 Botjlgee's Geological Notes of a Journey round the 

 Coast of Norway and into Northern Russia ; Messrs. G. J. 

 Hijstde and H. Eox on a well-marked Horizon of Radio- 

 larian Rocks in the Lower Culm Measures of Devon, 

 Cornwall, and West Somerset ; Messrs. G. E. Scott-Elliot 

 and J. W. Gregoey on the Geology of Mount Ruwenzori 

 and some Adjoining Regions of Equatorial Africa ; Mr. A. 

 Steahan on Over-tbrusts of Tertiary Date in Dorset . . 313-319 



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It is requested that all Co rnmuni cations for this Work may be addressed, 

 post-paid, to the Care of Messr3. Taylor and Francis, Printing Office, Red 

 Lion Court, Fleet Street, London. 



