732 



INDEX. 



Wadsworth (Prof. F. L. 0.) on the 

 aberration of the concave grating, 

 119. 



Walker (G. W.) on the theory of 

 the quadrant electrometer, 238 ; 

 on the theory of refraction in 

 gases, 464 ; on unsymmetrical 

 broadening of spectral lines, 536. 



Water radioactivity, on, 563. 



Watson (Dr. W.) on the construc- 

 tion and attachment of thin 

 galvanometer mirrors, 188. 



Watts (Dr. W. M.) on the atomic 

 weight of radium. 64. 



Waves in an isotropic elastic solid, 

 on the work done by a force in 

 generating, 385. 



Wave-tracer and analyser, on a, 

 549. 



Whitwell (A.) on refraction at a 

 cylindrical surface, 46. 



Williams (W. E.) on the influence 

 of stress and of temperature on 

 the magnetic change of resistance 



in iron, nickel, and nickel-steel, 

 693. 



Wilson (Dr. H. A.) on the electric 

 intensity in the uniform positive 

 column in air, 180 ; on the ioniza- 

 tion produced by hot platinum in 

 air, 267. 



Wire, on the influence of stifihess on 

 the form of a suspended, 166. 



Wood (Prof. R. W.) on the anom- 

 alous dispersion, absorption, and 

 surface-colour of nitroso-dimethyl- 

 aniline, 96 ; on the electrical 

 resonance of metal particles for 

 light-waves. 259 ; on the fluo- 

 rescence and absorption spectra of 

 sodium vapour, 362 ; on photo- 

 graphic reversals in spectrum 

 photographs, 577. 



Woodward (H. B.) on disturbances 

 in the chalk near E-oyston, 631. 



Work done by forces operative at 

 one or more points of an elastic 

 solid, on the, 385. 



END OF THE SIXTH VOLUME. 



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