552 



INDEX. 



action of the, upon the earth, 384 ; 

 on the measurement of the chemical 

 brightness of various portions of 

 the disc of the, 384 ; on the heat 

 of the rays of the, 478 ; on the ap- 

 pearance of the disc of the, 545. 



Synthesis of organic bodies, on the, 

 299. 



Talmage (C. G.) on the appearance of 

 the disc of the sun, 545. 



Tate (T.) on the magnitude of a drop 

 of liquid formed under different 

 circumstances, 176. 



Temperature, on the decrease of, with 

 the altitude, 132. 



Tension, on the cause of the cooling 

 effect produced on solids by, 380. 



Thallium, on the preparation of, 

 497. 



Thermo-electric currents of the Rit- 

 terian species, on, 383. 



Tomlinson (C.) on the electrical fly, 

 202 ; on a new variety of the cohe- 

 sion-figures of liquids, 425 ; on the 

 motions of eugenic acid on the sur- 

 face of water, 528. 



Tungsten, on the constitution and 

 properties of the oxygen compounds 

 of, 496. 



Tyndall (J.) on the velocity of sound, 

 41. 



Valerylene, on the preparation and 

 properties of, 501. 



Valleys of the East of England, on 

 the formation of the river- and 

 other, 180. 



Vapours, on the condensation of, on 

 the surfaces of solid bodies, 24 1 . 



Vogt (Dr. C.) on the electric con- 

 ducting-power of alloys, 467. 



Vortices, on the hypothesis of mole- 

 cular, 313. 



Wanklyn (Prof. J. A.) on the syn- 

 thesis of organic bodies, 299 ; on 

 the distillation of mixtures, 382. 



Waterston (J. J.) on the application 

 of the vapour-density system of no- 

 tation to express chemical reac- 

 tions, 273; on liquid expansion, 

 348. 



Wehrhane (M.) on cyanide of phos- 

 phorus, 497. 



Wertheim (M.) on the preparation 

 and composition of piperidine, 1 13. 



Williamson (Prof.) on the dynamics 

 of the galvanic battery, 353. 



Woieikoff (M.) on the action of bin- 

 iodide of phosphorus on glycerine, 



Wood (S. V.) on the formation of the 

 river- and other valleys of the East 

 of England, 180. 



Wiillner (A.) on the absorption of 

 light, 44. 



Zincethyle, on the preparation of, 500. 



Zwenger (M.) on cumarine, 1.07. 



END OF THE TWENTY-SEVENTH VOLUME. 



PEINTED BY TAYLOE AND .FRANCIS, 

 RED LION COURT, FLEET STREET. 



