544 



I N D E X. 



On ft remarkftble modification of 

 Stnrm's theorem, 446. 



Symmetric products, on the method 

 of, 170. 



Tate's (T.) Principles of Mechanical 

 Philosoj)hy applied to Industrial 

 Mechanics, reviewed, cJ74. 



Temperature, on the periodic and 

 non-})eriodic variations of, 376; of 

 every day in the year, on the deter- 

 mination of the mean, 374. 



Thermometers, on a sensible difference 

 between the mercurial and air, 63. 



Thomson (Prof. W.) on the restora- 

 tion of mechanical energy from an 

 unequally heated space, 102 ; on 

 the mutual attraction or repulsion 

 between two electrified spherical 

 conductors, 287; on transient elec- 

 tric currents, 393. 



Toad, on the reproduction of the, 466. 



Topaz, on a remarkable fluid cavity 

 in a, 235. 



fo}Tibee (Dr. J.) on the functions of 

 the membrani tympani, 55; on the 

 muscles which open the Eustachian 

 tube, 378. 



Trigonometrical operations, account 

 of some, 461. 



Trona, analysis of some supposed 

 crystals of, 373. 



Tylor (A.) on changes of the sea-level 

 effected by existing physical causes 

 during stated periods of time, 258. 



T3Tidall (Dr. J.) on the transmission 

 of heat through organic structures, 

 138 ; on the temperatures of con- 

 ductors of electrical currents, 147 ; 

 on the influence of material aggre- 

 gation upon the manifestations of 

 force, 303. 



Urinary calculi, on the solution of, by 

 the aid of electricity, 137. 



Urine of t^pileptic patients, presence 

 of sugar in, 230. 



Verantine,on some compoimdsof,424. 



Walker (J. J.) on the iris seen in 

 water, 439. 



Wartniann (Prof. E.) on the conduc- 

 tibility of minerals for voltaic elec- 

 tricity, 12; on the electric light, 15. 



Waterston (J. J.) on a sensible differ- 

 ence between the mercurial and 

 air-thermometers, 63. 



Waves, on the theory of, 1.33. 



Wertheim(G.)on the induced currents 

 produced by the torsion of iron, 69. 



Wetherill (Dr. C. M.) on the occur- 

 rence of gold in Pennsylvania, 150. 



Wildenstein (R.) on the presence of 

 boracic acid in mineral waters, 230. 



Wilkinson (T. T.) on mathematics 

 and mathematicians, 185, 514. 



WiUiams (C. G.) on a method of di- 

 stinguishing the volatile oils of the 

 series C' IP, 536. 



Williamson (Prof.) on Gerhardt's 

 anhydrous organic acids, 381. 



Wolf (R.) on the periodic return of 

 the minimum of sun-spots, the 

 agreement between those periods 

 and the variations of magnetic^, 

 declination, (dj . M. 



Wood, on the transmission of heat 

 through various kinds of, 138. 



Woods (Dr. T.) on the heat of che- 

 mical combinations, 10. 



Younghusband (Capt.) on periodical 

 laws in the larger magnetic disturb- 

 ances, 379. 



Zinc, per-centage of, in brass and 

 bronze, 230 ; on the separation of, 

 from copper, ib. ; action of, upon 

 iodide of methyle, 239. 



Zincmethvlium, researches on, 61, 

 239. 



END OF THE FIFTH VOLUME. 



PRINTED BY TAYLOR AND FRANCIS, 

 RED LION COURT, FLEST STREET. 



