\c 



876 



INDEX. 



Water, on the electric brush dis- 

 charge in, 461. 



vapour, on the absorption of 



electric waves by, 702. 



Waves, on the absorptiou of short 

 electric, by air and water-vapour, 

 702 ; on the transmission of, in 

 wireless telegraphy, 757. 



Webster (D. L.) on the theory of 

 the scattering of Rontgen radia- 

 tion, 234 



Wheeler (Dr. L. P.) on the dis- 

 persion of metals, 661. 



Wireless telegraphy, on an exact 

 mechanical analogy to the coupled 

 circuits used in, 567 ; on the 

 absorption of the waves in, by 



air and water-vapour, 702 ; on 

 the transmission of waves in, 

 757. 



Wood (Prof. R. W.) on the selective 

 dispersion of mercury vapour at 

 the 2536 absorption-line, 433 ; on 

 resonance experiments with the 

 longest heat- waves, 440 ; on 

 the satellites of the mercury lines, 

 443 ; on the imprisonment of 

 radiation by total reflexion, 449. 



Wylie (J.) on a graphical con- 

 struction for steering course of a 

 ship, 558. 



X rays, on the photographic effect 

 of, 296 ; on the pulse theory of, 

 534. 





END OF THE TWEXTY-FIFTH VOLUME. 



*~<y 



Printed bv Taylor and Fka.vcis, Red Lion Court, Fleet Street,, 



