548 



INDEX. 



Thomson (Sir W.) on the reflexion 

 and refraction of light, 414, 500. 



Thorpe (Dr. T. E.) on some additions 

 to the Kew magnetometer, 122. 



Thunderstorms, on some remarkable, 

 485. 



Tomlinson (C.) on some effects of 

 lightning, 114 ; on the weathering 

 of rocks and certain electrical 

 phenomena, 475. 



Tomlinson (H.) on the sudden loss of 

 the magnetic properties of iron and 

 nickel at certain temperatures, 18. 



Transformers, on continuous-current, 

 149. 



Trowbridge (J.) on selective absorp- 

 tion of metals for ultra-violet light, 

 316 ; on wave-lengths of metallic 

 spectra in the ultra-violet, 342. 



Vautier (Th.) on the velocity of pro- 

 pagation of sound, 77. 



Verdet's constant of liquids, on, 314. 



Vibrations of electromagnetic sys- 

 tems, on the forced, 360, 434,488. 



Violle (J.) on the velocity of propa- 

 gation of sound, 77. 



Viscosity of solids, on Maxwell's 

 theory of the, 183. 



Water, on the specific heat of, 302 ; 

 on flux and reflux of, in open 

 channels or in pipes or other ducts, 

 382; on the action of electricity 

 on the vesicles of condensed, 465. 



Wave-lengths of metallic spectra in 

 the ultra-violet, on, 342. 



Waves, on electromagnetic, 360, 434, 

 488. 



Willigen's (V. der) formula for the 

 lifting-power of magnets, on, 70. 



Wilson (E.) on the Durham salt- 

 district, 237 ; on the law of dis- 

 persion, 385. 



Woods, on the influence of moisture 

 on the length of certain, 319. 



END OF THE TWENTY-SIXTH VOLUME. 



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



