520 



INDEX. 



Van tier Waals's theory, on the ap- 

 plication of, to certain mixtures, 

 189. 



Vincent (J. H.) on the construction 

 of models and diagrams to illus- 

 trate the propagation of light in 

 hiaxals, 817. 



Vogel (H. W.) on the measurement 

 of the brightness of daylight, 212. 



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

 conditions which determine the 

 ultimate optical efficiency of me- 

 thods for observing small rotations, 

 and on a simple method of doubling 

 the accuracy of the mirror and 

 scale method, 88. 



Waidner (C. W.) on a comparison 

 of Rowland's mercury thermo- 

 meters with a Griffiths platinum 

 thermometer, 165. 



Water, on the specific electric con- 

 ductivities and freezing-points of 

 solutions of, in formic acid, 9 ; on 

 the surface-tension of, 134 ; on 

 accidental double refraction in, 

 501. 



Watson (W.) on an instrument for 

 the comparison of thermometers, 

 116. 



Wave-motion, on proofs of a theorem 

 in, 98, 206. 



Waves, on the incidence of aerial 

 and electric, upon small obstacles, 

 28 ; on the propagation of, along 

 connected sj'Stems of similar 

 bodies, 85G. 



, electric, on the passage of, 



through a circular aperture in a 

 conducting screen, 50 ; on the at- 

 tenuation of, along wires and their 

 reflexion at the oscillator, 145 ; on 

 the propagation of, along cylin- 

 drical conductors, 199. 



Whetham (W. C. U.) on the ionizing 

 power of solvents, 1. 



Whitehead (C. S.) on the effect of a 

 spherical conducting shell on di- 

 electric induction, 154. 



Wildermann (Dr. M.) on real 

 apparent freezing-points and tl 

 freezing-point methods, 459. 



Wires, on the attenuation of electric 

 waves along, 145. 



Woolacott (D.) on the Claxheugh 

 section, 443. 



Wulf (T.) on Latimer Clark's stan- 

 dard cell when closed, 291. 



Zeeman (Dr. P.) on doublets and 

 triplets in the spectrum produced 

 by external magnetic forces, 

 255. 



E^D OF THE FORTY-FOURTH VOLUME. 



Printed by Taylor and Francis, Red Lion Court, Fleet Street. 



