CONTENTS OF VOL. XL. — SIXTH SKKIES. Vll 



Page 

 Mr. J. S. G. Thomas on the Directional Hot- Wire Anemo- 

 meter : Ls Sensitivity and Range of Application 640 



Prof. IS. Chapman : A Note on Magnetic Storms 665 



Prof. A. Anderson on the Advance of Perihelion of a Planet. 670 

 Prof. F. A. Lindemann on the Theory of the Velocity of 



Chemical Reaction 671 



Prof. W. B. Morton on the Modification of the Parabolic 



Trajectory on the Theory of Relativity 674 



Notices respecting New Books : — 



Sir J. A. Ewing's Thermodynamics for Engineers 678 



Prof. P. Geddes' Life and Works of Sir Jagadis C. Bose 678 



Christian Huygens' Traite de La Lumiere 679 



R. H. Fowler's The Elementary Differential Geometry 



of Plane Curves 680 



Suremdranshan Ganganli's Lectures on the Theory of 



Plane Curves . .. 680 



Editorial Note 680 



NUMBER CCXL.— DECEMBER. 



Prof. J. Joly on the Closure of Small Cavities in Rocks 



exposed to High Pressures. (Plate XVI.) 681 



Mr. A. H. Davis on Convection of Heat and Similitude .... 692 



Mr. Wilfrid Wilson on Space-Time Manifolds and corre- 

 sponding Gravitational Fields 703 



Sir J. J. Thomson on some Optical Effects including Re- 

 fraction and Rotation of the Plane of Polarization due 

 to the Scattering of Light by Electrons. - 713 



Mr. J. Chadwick on the Charge on the Atomic Nucleus and 

 the Law of Force 734 



Dr. G. Borelius on the Electron Theory of the Metallic 

 State ". 746 



Mr. A. L. McAulay on an Electrical Method for the Mea- 

 surement of Recoil Radiations 763 



Prof. W. B. Morton : Note on Einstein's Law for Addition 

 of Velocities 771 



Mr. F. C. Toy and Dr. J. C. Ghosh on the Absorption of 

 Light by the Goldberg Wedge. (Plate XVII.) 775 



Dr. A. M. Tyndall on the Pressure on the Poles of an 

 Electric Arc 780 



Prof. W. G. Duffield and Miss Mary D. Waller on the 

 Alternating-Current Carbon Arc 781 



Mr. S. Ratner : Experiments on the Nature of Discharge of 

 Electricity through rarefied Gases 785 



Dr. H. H. Poole on the Uee of Vector Methods in the 

 Derivation of the Formulae used in Inductance and 

 Capacity Measurements 793 



