488 



INDEX. 



constitution of the, 2.90, 343; on 

 the spectrum of the, 407. 



Szily (C.) on Hamilton's dynamic 

 principle in thermodynamics, 426. 



Telegraphy, on duplex, 88. 



Thallene, on the spectrum of fluores- 

 cent light from solid, 93. 



Thermodiffusion of gases, on, 55. 



Thermodynamics, on Hamilton's dy- 

 namic principle in, 426. 



Tomlinson (C.) on the motions of 

 camphor and of certain liquids on 

 the surface of, 3/6. 



Tones, on explosions produced by 

 high, 256. 



Trowbridge (J.) on induced currents 

 and derived circuits, 84. 



Tribe (A.) on a specific-gravity bottle 

 for liquids spontaneously inflam- 

 mable in contact with air, 308. 



Unitates, on negative and fractional, 

 36. 



Vapours, on the determination of the 

 specific heat of, at constant vo- 

 lumes, 289, 361. 



Venus, on the " black drop " in the 

 transit of, 375, 



Vibrating system, on the fundamenta 

 modes of a, 434. 



Vibrations of approximately simple 

 systems, on the, 357. 



Vision, on monocular and binocular, 80. 



Volcanoes and igneous ejections, on, 

 276. 



Voltaic current, on various cases of 

 intermission of the, 481. 



Walenn (W. H.) on negative and frac- 



* tional unitates, 36. 



Water, on the motions of camphor 

 and of certain liquids on the sur- 

 face of, 376. 



Waters, on the composition and origin 

 of the, of a salt spring in Huel 

 Seton Mine, 26. 



Williams (G.) on emeralds and beryls, 

 314. 



Young (Prof. C. A.) on the use of a 

 diffraction-grating in a solar spec- 

 troscope, 8/. 



Zenger (Prof. C. v.) on a new spec- 

 troscope, 439. 



Zollner (Prof. F.) on the temperature 

 and physical constitution of the sun, 

 290, 343. 



END OF THE FORTY-SIXTH VOLUME. 



PRINTED BY TAYLOR AND FRANCIS, 

 RED LION COURT, FLEET STREET. 



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