CONTENTS OF VOL. XLVII 



(FIFTH SEEIES). 



NUMBEE CCLXXXIV.— JANUAEY 1899. 



- Page 



Mr. Albert Campbell on the Magnetic Fluxes in Meters and 

 other Electrical Instruments 1 



Messrs. Edward B. Eosa and Arthur W. Smith on a Eeson- 

 ance Method of Measuring Energy dissipated in Con- 

 densers 19 



Dr. E. H. Cook on Experiments with the Brush Discharge. 

 (Plate I.) 40 



Dr. van Eijckevorsel on the Analogy of some- Irregularities 

 in the Yearly Range of Meteorological and Magnetic 

 Phenomena. (Plate II.) 57 



Lord Kelvin on the Age of the Earth as an Abode fitted for 

 Life 66 



Mr. D. L. Chapman on the Eate of Explosion in Gases .... 90 



Prof. Carl Bar us on the Aqueous Fusion of Glass, its Eelation 

 to Pressure and Temperature 104 



Prof. E. Eutherford on Uranium Eadiation and the Electrical 

 Conduction produced by it 109 



Notices respecting New Books : — 



Dr. E. J. Eouth's Treatise on Dynamics of a Particle . . 163 



Susceptibility of Diamagnetic and Weakly Magnetic Sub- 

 stances, by A. P. Wills 164 



NUMBER CCLXXXV.— FEBRUARY. 



Dr. Thomas Preston on Eadiation Phenomena in the Mag- 

 netic Field. — Magnetic Perturbations of the Spectral 

 Lines 165 



