INDEX. 



639 



tacean, and the variations of form exhi- 

 bited in the larvae of 38 genera of Po- 

 dophthalmia, 375. 



Equation, mechanical integration of the 

 general linear differential, of any order 

 with variable coefficients, 271. 



Equations, mechanical integration of the 

 linear differential, of the second order 

 with variable coefficients, 269. 



of the first order, on the theory of 



the solution of a system of simultaneous 

 no"~ -linear partial differential, 337. 



Equipotential curves and surfaces, on the 

 forms of, and on lines of flow, 1. 



Expansion of sea-water by heat, on the, 

 159. 



Explosions, on the influence of coal-dust 

 in colliery, 354. 



Extract from the will of the late Sir C. 

 Wheatstone, 32. 



Falkland Islands to Monte Video &c, 

 report to the Hydrographer of the Ad- 

 miralty on the Voyage of the ' Chal- 

 lenger ' from the, 623. 



Fatigue, on the law of, 42. 



Fellows deceased, 71 ; elected, 71 ; num- 

 ber of, 95. 



Figures, on the number of, in the period 

 of each reciprocal of a prime from 

 53,000 to 60,000, 392. 



Financial statement, 96, 97. 



Fishes, on the development of the spinal 

 nerves in Elasmobranch, 135. 



Force, electromotive, on certain cases of, 

 sustained by the action of electrolytes 

 on electrolytes, 183. 



, on the, caused by the communica- 

 tion of heat between a surface and a 

 gas, and on a new photometer, 388. 



— — , on the nature of the, producing the 

 motion of a body exposed to rays of heat 

 and light, 391. 



Formula? of verification in the partition 

 of numbers, 250. 



Friction, on the, between air and water, 

 441. 



Functions, on an instrument for calcula- 

 ting the product of two given, 266. 



Galloway (W.) on the influence of coal- 

 dust in colliery explosions, 354. 



Gaseous state of matter, on the, 455. 



Gassiot (J. P.), a direct-vision compound 

 prism presented to the Society by, 33. 



Geikie (J.), admitted, 32. 



Geological and chemical work, prelimi- 

 nary report on, done on board H.M.S. 

 ' Challenger,' 388, 593. 



Gladstone (J. H.) and Tribe (A.) on the 

 replacement of electro-positive by elec- 

 tro-negative metals in a voltaic cell, 47. 



Glaisher (J. W. L.) on formula? of verifi- 

 cation in the partition of numbers, 250. 



VOL. XXIV. 



Glass case of a radiometer, on the move- 

 ment of the, 409. 



Glycosuria, on the poduction of, by the 

 effect of oxygenated blood on the liver, 

 51. 



Gore (G.) on some electro-magnetic rota- 

 tions of bar-magnets and conducting- 

 wires on their axes, 121. 



Government grant, account of appropria- 

 tion of the, 1875, 101. 



Hanbury (D.), obituary notice of, ii. 



Hansteen (C), obituary notice of, v. 



Haughton (S.) on some elementary prin- 

 ciples in animal mechanics : No. VII. 

 The law of fatigue, 42. 



Hawaii and Valparaiso, on some of the 

 results of the cruise of H.M.S. ' Chal- 

 lenger ' between, 403, 463. 



Heat and light, on the nature of the force 

 producing the motion of a body exposed 

 to rays of, 391. 



, on the expansion of sea-water by, 



159. 



, on the force caused by the commu- 

 nication of, between a surface and a gas, 

 and on a new photometer, 388. 



Heliopora ccsrulea, on the structure and 

 relations of the Alcyonarian, 59. 



Hofmann (A. W.), Copley medal awarded 

 to, 89. 



Hopkinson (J.) on certain cases of electro- 

 motive force sustained by the action of 

 electrolytes on electrolytes, 183. 



on the residual charge of the Leyden 



jar, 407. 



Horizontal force, magnetic dip, and decli- 

 nation, results of the monthly observa- 

 tions of, made at the Kew Observatory 

 from April 1869 to March 1875 inclu- 

 sive, 232. 



force, on the variations of the daily 



mean, of the earth's magnetism pro- 

 duced by the sun's rotation and the 

 moon's synoclical and tropical revolu- 

 tions, 231. 



Hydrographer of the Admiralty, prelimi- 

 nary report to the, on some of the 

 results of the cruise of H.M.S. ' Chal- 

 lenger ' between Hawaii and Valparaiso, 

 403, 463. 



of the Admiralty, report to the, on 



the cruise of H.M.S. ' Challenger ' from 

 June to August 1875, 33. 



of the Admiralty, report to the, on 



the voyage of the ' Challenger ' from 

 the Falkland Islands to Monte Video, 

 and a position in lat. 32° 24' S., long. 

 13° 5' W., 623. 



Hyrax, on the placentation of, 151. 



Infection and putrefaction, on the optical 

 deportment of the atmosphere in refe- 

 rence to the phenomena of, 171. 



2z 



