INDEX. 



34$ 



Current, on the action of two ele- 

 ments of a, 314. 

 Davis (W. S.) on a simple method of 

 illustrating the chief phenomena of 

 wave-motion, 262. 

 Davy (Dr. E. W.) on a singular sul- 

 phuretted nitrogenous compound, 

 247. 

 Daylight, on a method of measuring 

 the intensity of chemical action of 

 total, 220. 

 Donkin (A. E.) on the composition 



of two harmonic curves, 223. 

 Earth, on the tidal retardation of the 

 rotation of the, 38 ; on|the phy- 

 sics of the internal, 237 ; on the 

 cosmic dust which falls on the sur- 

 face of the, with the atmospheric 

 precipitation, 546. 

 Earth-currents, on, 315. 

 Electric conductors, on the attraction 

 of, 393. 



currents, on constant, 79; on 



the application of the vibrations 

 of sound to the measurement of, 

 115; accompanying the non-simul- 

 taneous immersion of two mercury 

 electrodes in various liquids, on, 

 479. 



light, on the stratification of the, 



320. 

 spark, on a peculiar phenome- 

 non in the path of the, 160. 

 Electrical vibrations, experiments on, 



340. 

 Electricity, on the conversion of or- 

 dinary into amorphous phospho- 

 rus by the action of, 239; on 

 the dissipation of, by flames, 319. 

 Electrotorsion, on, 70. 

 Evaporation and condensation, on 

 surface-forces caused by, 146, 389. 

 Exner (Dr. P.) on the passage of 



gases through liquid films, 547. 

 Fewkes (J. W.) on the dissipation of 



electricity by flames, 319. 

 Flames, on the dissipation of electri- 

 city by, 319. 

 Fluorescent bodies, on the behaviour 



of certain, in castor-oil, 165. 

 Formulae, on the relations between 



affinity and structural, 401. 

 Fouriers theorem, 95 ; experiment al 



confirmation of, 266. 

 Galvanic coil, on the hydrodynamical 

 theory of the action of a, on an 



external small magnet, 180, 350, 

 430. , 



Galvanometer, on an absolute, 296, 

 526. 



Gas, on an apparatus for measure- 

 ment of low pressures of, 110. 



Gases, on a new method for measur- 

 ing the specific heat of, 398; on 

 the passage of, through liquid 

 films, 547. _ 



Geissler (Dr.) on the conversion of 

 ordinary into amorphous phospho- 

 rus by electricity, 239. 



Geological ages, on the comparative 

 value of certain, 143. 



Society, proceedings of the, 72, 



153,227,310,541. 



Glacial phenomena of the Hebrides, 

 on the, 74. 



Gladstone's experiments relating to 

 chemical mass, observations on, 



Glaisher (J. W. L.) on a new formula 

 in definite integrals, 53, 400 ; on 

 the problem of the eight queens, 



45 7- • , u 



Glan (Dr. P.) on the intensity of the 



light reflected from glass, 475. 



Glass, on the intensity of the light 

 reflected from, 475. 



Glass cell, on a convenient method of 

 making a, 61. 



Gore (G.) on electrotorsion, 70 ; on 

 the attraction of magnets and elec- 

 tric conductors, 393. 



Grubb (T.) on the improvement of 

 the spectroscope, 532. 



Guthrie (F.) on an absolute galvano- 

 meter, 296, 526. 



Hamilton's theory of motion, on a 

 m echanical principle resulting from, 

 274. 



Harmonic curves, on the composi- 

 tion of two, 223. 



Hartley (W. N.) on the chemical con- 

 stitution of saline solutions, 391. 



Heat, on the action of, on gravitating 

 masses, 65, 81, 143, 389 ; on a 

 new method for measuring the spe- 

 cific, of gases, 398. 



Heine (M.) on constant electric cur- 

 rents, 79. 



Helmholtz's hypothesis of audition, 

 experimental illustration of, 273. 



Hennessey (J. H. N.) on displacement 

 of the solar spectrum, 303. 



