560 



INDEX. 



Strontium, on the spectrum reaction 

 of, 99. 



Succinic acid, on the conversion of, 

 into tartaric acid, 50. 



Sumnoethylenic acid, 43. 



Sulphanilic acid, on the action of ni- 

 trous acid on, 13.9. 



Swan (Prof.) on chemical analysis by 

 spectrum-observations, 1/3. 



Sycoceryle, on the acetate of, 225. 



Sylvester (Prof. J. J.) on Poncelet's 

 approximate linear valuation of 

 surd forms, 203, 307, 525 ; on the 

 pressure of earth on revetment- 

 walls, 489. 



Tait (P. G.) on the volumetric rela- 

 tions of ozone, 549. 



Tartaric acid, on the transformation 

 of, into succinic acid, 50. 



Tate (T.) on a new self-registering 

 mercury barometer, 263 ; on the 

 construction of a new air-thermo- 

 meter, 298 ; on the laws of absorp- 

 tion of liquids by porous sub- 

 stances, 364, 500. 



Thermometer, on a new minimum 

 and maximum mercurial, 228 ; on 

 the construction of a new air-, 

 298. 



Thomson (Prof. W.) on the measure- 

 ment of electrostatic force, 233 ; on 

 the measurement of electromotive 

 force, 316 ; on atmospheric electri- 

 city, 360; on the thermal effects 

 of fluids in motion, 552. 



Thoria, on the crystallization of, 378. 



Thunder, on the velocity of the sound 

 of, 37. 



Transcendental roots, on a theory of, 

 145. 



Tungstatcs, on the, 3/4. 



Valerianic aldehyde, on the action of 

 chlorine upon, 199. 



Vapours, on the elastic force of, 275. 



Vaughan (D.) on the form of satel- 

 lites revolving at small distances 

 from their primaries, 409. 



Vision, on the theory of binocular, 329. 



Vogt (M.) on some new organic com- 

 pounds, 522. 



Volpicelli (M.) on atmospheric elec- 

 tricity, 327. 



Voltaic batteries, on the luminous 

 discharge of, 540. 



circuit, on the movements of 



liquid metals and electrolytes in 

 the, 149. 



Wall (G. P.) on the geology of Vene- 

 zuela and Trinidad, 164. 



Water, on the temperature of, in the 

 spheroidal state, 553. 



Waters, spectrum-analysis of Lon- 

 don, 373. 



Weber (M.) on some compounds of 

 selenium, 296. 



Wbhler (Prof.) on the properties of 

 cocaine, 141 ; on some new salts of 

 the suboxide of silver, 376; on 

 alloys of aluminum, 377- 



Wood's fusible metal, 403. 



Wurz (M.) on the oxide of ethylene, 

 290 ; on the synthetical formation 

 of some new acids, 292. —•■ 



Zinc-ethyle, on the action of chloride 

 of benzoyle on, 522. 



Zirconia, on the formula of, 8 . 



END OF THE TWENTIETH VOLUME. 



PRINTED BY TAYLOR AND FRANCIS, 

 RED LION COURT, FLEET STREET. 



FLAMMAM. 



