464 



INDEX. 



tions of twitched and stroked, 



197. 

 Sulphur, an experiment on, 79 ; on 



some crystalline forms of, 186. 

 Telegraph-cable, on a simple method 



of identifying a submerged, with- 

 out cutting it, 440. 

 Telephone, observations on the, 442. 

 Telephonic circuits, on induction in, 



352. 

 Temperatures, on the determination 



of high, 390. 

 Thermo-chemistry, on Berthelot's, 



367. 

 Thompson (Prof. S. P.) on some lec- 

 ture experiments in acoustics, 75. 

 Thomson (J. J.) on Maxwell's theory 



of light, 284. 

 Thomson's galvanometer, on, 156. 

 Tin-mining in Banka and Bilitong, 



156. 

 Torsion, on, 1, 97. 

 Treve (M.) on some new luminous 



tubes, 155. 

 Troost (L.) on the determination of 



high temperatures, 390. 

 Unitation, on, 121, 271. 

 Varenne (L.) on the passivity of iron, 



76. 



Vibrations of twitched and stroked 

 strings, on the forms of the, 107. 



Vieille (M.) on the decomposition of 

 some explosives in a closed vessel, 

 455. 



Voltaic arc, on the temperature of 

 the, 154. 



current, on the influence of 



friction upon the generation of a, 

 374. 



Vowel qualities, demonstration of, 

 75. 



Walenn (W. H.) on a method of 

 checking calculations, 56 ; on uni- 

 tation, 121, 271. 



Water, on the electromotive forces 

 which appear in free jets of, 312. 



Wiedemann (Dr. G.) on torsion, 1, 

 97. 



Wild (H.) on a complete theory of 

 the bifilar magnetometer, 443. 



Wood (S. V., jun.) on the newer 

 Pliocene period in England, 382. 



Wright (Dr. C. R. A.) on the deter- 

 mination of chemical affinity in 

 terms of electromotive force, 237, 

 331. 



END OF THE NINTH VOLUME. 



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



