CONTENTS OF VOL. XXVII. FIFTH SERIES. Vll 



Mr. R. N. "Worth on the Elvans and Volcanic Eocks of 



Dartmoor 434 



The Sensitive Flame as a Means o£ Research, by W. Leconte 



Stevens 435 



On the Law of Solubility of Gases, by M. Woukoloff 439 



On a Voltaic Current obtained with Bismuth in a Magnetic 



Field, by Dr. G. P. Grimaldi 440 



"Why Iron" Eails which are in use do not Rust so rapidly as 



unused ones, by "W. Spring 442 



Experimental Researches on the Tension of the Vapour of 



Solutions, by P. M. Raoult _ 442 



On Chemical Action between Bodies in the Solid State, by "W. 



Spring 444 



JSTJMBER CLXIX.— JUNE. 



Messrs. H. A. Rowland and Gary T. Hutchinson on the Electro- 

 magnetic Effect of Convection- Currents. (Plate IX.) .... 445 



Lord Rayleigh on the Character of the Complete Radiation at 

 a given Temperature 460 



Dr. 0. Lodge on an Electrostatic Pield produced by varying 

 Magnetic Induction 469 



Prof. H. A. Rowland's Table of Standard Wave-Lengths .... 479 



Lord Rayleigh on the Visibility of Paint Interference-Bands . 484 



Mr. A. Blytt on the probable Cause of the Displacement of 

 Shore-lines, an Attempt at a Geological Chronology. 

 (Plate X.) 487 



M. Mascart on the Achromatism of Interferences 519 



Notices respecting New Books : — 



Mr. A. B. Basset's Treatise on Hydrodynamics. Vol. II. 525 



On the Passage of Electricity through Bad Conductors, by 

 Hugo KoUer 526 



The Isotherms of Gases, by M. Aroldo Violi 527 



Index 528 



