574 



IKDEX. 



and the induction-balance effect of, 

 551 ; on the specific electrical re- 

 sistance of certain, 554. 



Daltonism, researches on, 502. 



Diamond, on the explosion of a, 572. 



Donath (J.) on the production of ba- 

 rium from barium-amalgam, 84. 



Draper (Dr. J. W.) on a new form of 

 spectrometer, and on the distribu- 

 tion of the intensity of light in the 

 spectrum, 75. 



Dynamo-electric machine, on a me- 

 thod of using a fraction of the main 

 current produced by a, for telegra- 

 phic purposes, 558. 



Earth, on the new theory of the mag- 

 netism of the, 102. 



Earthquake measurements, on a ne- 

 glected principle that may be em- 

 ployed in, 30 ; on structures in an 

 earthquake country, 209. 



Electric light, on the, 81, 335. 



Electricity, on the action of magne- 

 tism in motion on static, 256. 



Electrodes, on so-called unpolarizable, 

 535. 



Electromagnetic forces, on the devia- 

 tions of Ampere's theory of mag- 

 netism from the theory of the, 83. 



Electro-optic observations on various 

 liquids, 85, 229. 



Energy, on a classification of the 

 various forms of, 277. 



Finite differences, on an equation in, 

 120. 



Fitzgerald (G. F.) on the tension of 

 vapours near curved surfaces of 

 their liquids, 382. 



Fresnel's interference-phenomena, on 

 the true theory of, 339. 



Fromme (C.) on the alteration of the 

 density of steel by hardening and 

 tempering, 421. 



Galvanic current, on the passage of 

 the, through iron, 1, 138, 217. 



Geological Society, proceedings of 

 the, 419, 564. 



Gold, on the specific heat of, 501 ; on 

 the galvanic oxidation of, 504.^ 



Grant (W.) on the conjugate positions 

 of two circular coils of wire, 412. 



Guldberg (M.) on chemical affinity, 

 182. 



Guthrie (F.) on the fracture of col- 

 loids, 25 ; on magneto-electric in- 

 duction, 449. 



Hasselt (A. van) on an absorption 

 hygrometer, 340. 



Hearing, on the sensibility of the 

 organ of, 257. 



Heat, on the distribution of, in the 

 visible spectrum, 203 ; on a conve- 

 nient source of, for chemical opera- 

 tions, 250 ; on the mechanical equi- 

 valent of, 258 ; on an analogy be- 

 tween the conductivity for, and the 

 induction-balance effect of copper- 

 tin alloys, 551. 



Heaviside (O.) on the theory of faults 

 in cables, 60, 163. 



Hodges (N. D. C.) on the size of mo- 

 lecules, 74. 



Hood (J. J.) on the laws of chemical 

 change, 121. 



Hughes (Prof. D. E.) on an induc- 

 tion-balance and experiments there- 

 with, 50. 



(Prof. T. M'K) on the pre- 



Cambrian Rocks of Caernarvon, 

 419 ; on the Silurian rocks of the 

 valley of the Clwyd, 420. 



Hunt (R.) on the influence of the 

 solar rays on vegetation, 550. 



Hutchinson (C. C.) on a convenient 

 source of heat for chemical opera- 

 tions, 250 ; on the separation and 

 estimation of cadmium in the pre- 

 sence of zinc, 433. 



Hydrodiffusion, on the elementary 

 law of, 487, 523. 



Hygrometer, on an absorption, 340 j 

 on a new, 503. 



Induction, on a direct measurement 

 of the work of, 258 ; experiments 

 on, 412 ; on magneto-electric, 449. 



balance, on a new, and experi- 

 mental researches therewith, 50, 

 57. 



coil, on a mode of exciting, 390. 



Interference phenomena, on the true 

 theory of Fresnel's, 339. 



Iridium, on the specific heat of, 501. 



Iron, on the passage of the galvanic 

 current through, 1, 138, 217. 



filings, on the magnetic beha- 

 viour of, 135. 



Jamin (J.) on the electric light, 81. 



Jolly (W.) on the occurrence of a 

 new mineral in the rocks of Inver- 

 ness-shire, 565. 



Kerr (Dr. J.), electro-observations on 

 various liquids by, 85, 229. 



