532 



INDEX. 



Darwin (G. H.) on the precession of a 

 riscous spheroid, and on the remote 

 history of the earth, 184. 



, problems connected with the tides 



of a viscous spheroid, 194. 



Davy medal awarded to L. P. Cailletet 

 and K. Pictet, 68. 



Declination magnet, note on the inequa- 

 lities of its diurnal range, as recorded 

 at the Kew Observatory (Stewart), 

 241. 



(magnetic), a comparison of the 



variations of the diurnal range of, as 

 recorded at the observatories of Kew 

 and Trevandrum (Stewart and Mo- 

 risabro Hiraoka), 288. 



Dewar (J.) and Liveing (G. D.) on the 

 reversal of the lines of metallic vapours : 

 No. IV, 352 ; No. Y, 367 ; VI, 471. 



on a direct-vision spectroscope, 



482. 



Dielectrics, on the specific inductive 

 capacities of certain : Part I (Gordon) , 

 155. 



Donation fund, account of grants from 



the, in 1877-78, 75. 

 Downes (A.) and Blunt (T. P.) on the 



influence of light upon protoplasm, 



199. 



Earth, on a method of using the balance 

 with great delicacy, and on its em- 

 ployment to determine the mean den- 

 sity of the (Poynting), 2. 



, on the remote history of the 



(Darwin), 184. 



Elder (H. M.) and Eodwell (G. F.) on 

 the effect of heat on the di-iodide of 

 mercury, Hgl 2 , 284. 



Electric currents, on certain means of 

 measuring and regulating (Siemens), 

 292. 



discharge, note of an experiment on 



the spectrum of the (Grove) , 181. 



Electrical constants, measurements of : 

 No. II. On the specific inductive capa- 

 cities of certain dielectrics : Part I 

 (Gordon), 155. 



insulation in high vacua (Crookes) , 



347. 



Electricity, influence of, on water-drops 



(Rayleigh), 406. 

 and light, on an extension of the 



phenomena discovered by Dr. Kerr 



(Gordon), 346. 

 Electro-magnetic theory of the reflection 



and refraction of light (Fitzgerald), 



236. 



Elements, discussion of the working hy- 

 pothesis that the so-called, are com- 

 pound bodies (Lockyer), 157. 



Eocene Flora of Great Britain (Ettings- 

 hausen), 221. 



Equations, machine for the solution of 

 simultaneous linear (Thomson), 111. 



Ettingshausen (Baron) , report on phyto- 

 palgeontological investigations gene- 

 rally, and on those relating to the 

 Eocene Flora of Great Britain in par- 

 ticular, 221. 



Explosions (colliery), influence of coal- 

 dust in : No. II, (Galloway), 410. 



Fellows, deceased, 42 ; elected, 43 ; 

 number of, 69. 



Financial statement, 70. 



Fitzgerald (G. F.) on the electro-mag- 

 netic theory of the reflection and re- 

 fraction of light, 236. 



Flora (Eocene) of Great Britain (Ettings- 

 hausen), 221. 



Flow of water in uniform regime in 

 rivers and other open channels (Thom- 

 son), 114. 



Fog, on dry (Frankland), 238. 



Foreign members elected, 462. 



Fossil plants of the coal-measures, orga- 

 nised (Williamson), 445. 



Frankland (E.) on dry fog, 238. 



Fries (E. M.), obituary notice, vii. 



Fur of tongue, its nature, 484. 



Galloway (W.), influence of coal-dust in 



colliery explosions : No. II, 410. 

 Gas, on an extension of the dynamical 



theory of (Reynolds) , 304. 

 Gaseous state, on certain dimensional 



properties of matter in the : Parts I, II 



(Reynolds) , 304. 

 Gases, absorption of, by charcoal : Part II 



(Smith), 322. 

 , experimental researches on thermal 



transpiration of, through porous plates 



(Reynolds), 304. 

 Geddes (P.), physiology and histology of 



Convoluta Schultzii, 449. 

 Geological time, limestone as an index of 



(Reade), 281. 

 Geology (Physical), notes on : No. V, 



note in correction of an error in 



(Haughton), 154. 

 Glass fibre, on the torsional strain in 



a, after release from twisting stress 



(Hopkinson), 148. 

 Gordon (J. E. H.), measurements of 



electrical constants : No. II. On the 



specific inductive capacities of certain 



dielectrics : Part I, 155. 

 , on an extension of the phenomena 



discovered by Dr. Kerr, and described 



by him under the title of " A New 



Relation between Electricity and 



Light," 346. 

 Government fund of 4,000Z., account of 



the appropriations from, in 1878. 77. 



