532 



INDEX. 



Spring (W.) on the rusting of iron 

 rails, 442 ; on chemical action be- 

 tween bodies in the solid state, 

 444. 



Steam in spectrum analysis, on the 

 use of, 189. 



Stevens (W. L.) on the sensitive 

 tlame as a means of research, 43.5. 



Strains mechanically applied., on the 

 viscous effect of, 155. 



Stress, on the effects of torsion and 

 longitudinal, on the magnetization 

 of nickel, 117. 



Sutherland (W.) on molecular re- 

 fraction, 141 ; on the law of mole- 

 cular force, 305. 



Tachylyte, on the occurrence of a 

 new form of, 205. 



Tanakadate (A.) on the effects of 

 torsion and longitudinal stress on 

 the magnetization of nickel, 133. 



Telephone - transmitter, on the 

 strength of the induced current 

 with a magneto-, 392. 



Thermoelectric phenomena, on, 72. 



Tin, on the thermo-voltaic constant 

 of, 227. 



Tomhnsou (C.) on some efiects of 

 lightning, 208. 



Torsion and longitudinal stress on 

 the magnetization of nickel, on the 

 elFects of, 117. 



Trowbridge (Prof. J.) on the use of 

 steam in spectrum analysis, 139 



Tuning-fork, on the determination 

 of the vibration-period of a, by a 

 Morse receiver, 349. 



Tyrrell (J. B.) on the superficial 

 geology of the central plateau of 

 N.W. "Canada, 76. 



Units, on the dimensions of electro- 

 magnetic, 323. 



of measurement, on the systems 



of scientific, 104, 178. 



Vapour-tension of solutions, on the, 

 442. 



Violi (A.) on the isotherms of gases, 

 527. 



Violle (M.) on electrolysis, 36G. 



Viscosity on Maxwell's theory of, 

 166. 



Vision, on energy and, 1. 



Volcanoes of the western isles of 

 Scotland, on the tertiary, 279. 



Voltaic current, on a, obtained with 

 bismuth in a magnetic field, 

 440. 



energy of electrolytes, on the 



loss of, hj chemical union, 353. 



Waghorn (Dr. J. W. W.) on a 

 method of determining electro- 

 magnetic capacity, 69 ; on the 

 measurement of resistance, 322. 



Waterhouse (Lieut.-Col.) on the 

 photography of the solar spectrum, 

 284. 



Wave-lengths, table of standard, 

 479. 



Whittaker (W.) on the deep boring 

 at Streatham, 77. 



Williams (A. S.) on the strength of 

 the induced current with a mag- 

 neto-telephone transmitter, 392. 



Work, on the definition of the terms 

 energy and, 115, 



Worth (R. N.) on the elvans and 

 volcanic rocks of Dartmoor, 434. 



Woukoloff" (M.) on the law of solu- 

 bility of gases, 439. 



END OF THE TWENTY-SEVENTH VOLUME. 



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