56S 



INDE X. 



Suspension bridge, on the undulation 



of an unstiffened roadway in a, 445. 



Symbols, theorems in the calculus of, 



* 282. 



Tait (Prof.) on the electricity deve- 

 loped during evaporation, 494. 



Tangent-galvanometers, on the cor- 

 rection for the length of the needle 

 in, 345. 



Tate (T.) on the laws of evaporation 

 and absorption, 126, 283. 



Temperatures, on a new method of 

 measuring high, 537. 



Thomson (Prof. J.)onregelation,407. 



(Prof. W.) on the possible age 



of the sun's heat, 158. 



Tomlinson (C.) on the cohesion- 

 figures of liquids, 186. 



Tungsten, on the specific heat of, 116. 



Tyndall (J.) on recent researches on 

 radiant heat, 252; on the regela- 

 tion of snow-granules, 312. 



Tyrite, on the composition of, 563. 



Urine, on sugar in, 179. 



Van Breda (Prof.) on Ampere's expe- 

 riment on the repulsion of a recti- 

 linear electrical current on itself, 

 140, 365. 



Vapours, on some apparatus for de- 

 termining the densities of, 337. 



Vogt(Dr.C.)on the influence of traces 

 of foreign metals on the electric con- 

 ducting power of mercury, 171. 



Wagite, on the composition of, 160. 



Wanklyn (J. A.) on the electricity 

 developed during evaporation, 494. 



"Waterston (J. J.) on solar radiation, 

 497. 



Wood (Searles V.) on the form and 

 distribution of the land-tracts du- 

 ring the secondary and tertiary 

 periods, 161, 269, 382. 



Wurtz (M.) on propylic alcohol, 474. 



Zwenger (Dr.) on robinine, 476. 



END OF THE TWENTY-THIRD VOLUME. 



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