INDEX. 



647 



Ethylene bases, contributions towards the 

 history of the, 425. 



Ethylphosphine, 233. 



Euler's constant, on the numerical value 

 of, 29 (second paper). 



Evans (F. J.) on the present amount of 

 westerly magnetic declination [varia- 

 tion of the compass] on the coast of 

 Great Britain, and its annual changes, 

 434. 



Evans (J.), report on the exploration of 



BrixhamCave, 514. 

 Exercise, further experiments on the 



effect of, on the elimination of nitrogen 



and on the pulse and temperature of 



the body, 402. 

 Explosions in collieries and weather, on 



the connexion between, 292. 



Fellows deceased, list of, 48 ; elected, 48 ; 



number of, 57. 

 Films, thin, action of, on supersaturated 



saline solutions, 501. 

 Financial statement, 58. 

 Fire analysis, 449. 



Fluid state of matter, considerations on 

 the abrupt change at boiling or con- 

 densing in reference to the continuity 

 of the, 1. 



Fluoride of silver, on : Part TIL, 70. 

 Formal logic, contributions to, 307. 

 Fossil plants of the arctic regions, Sir 0. 



Lyell's notes on, 53. 

 of the coal-measures, notice of 



further researches among, 95, 435. 

 : Part III. Lycopodiacece, on 



the organization of, 199. 

 Foster (M.), admitted, 414. 

 Fox (W.), admitted, 379. 

 France, magnetic survey of the east of, in 



1869, 39. 

 Fucusol, note on, 80. 



Fungus-germs, on some heterogenetic 



modes of origin of, 239. 

 life, on the development of, 187, 



191. 



Galton (F.) on blood-relationship, 394. 



Galvanic coils, experiments on the di- 

 rective power of, 158. 



Gases, determination of, by vesiculation, 

 465. 



, ■ on the action of electricity on, 



Gassiot (J. P.), his endowment of Kew 

 Observatory, 49. 



Geyger (A.) and Hofmann (A.W.), colour- 

 ing-matters derived from aromatic azo- 

 diamines, 431. 



Gibraltar, investigations of the currents in 

 the strait of, 97. 



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

 VOL. XX. 



action of oxygen on copper nitrate in 

 a state of tension. 290. 



Gladstane (J. H.) and Tribe (A) on the de- 

 composition of water by zinc in conjunc- 

 tion with a more negative metal, 218. 



Glauber's salt, on the action of low tem- 

 peratures on supersaturated solutions 

 of, 109. 



Gore (G.) on fluoride of silver : Part III., 

 70. 



on some properties of anhydrous 



liquefied ammonia, 441. 



on the solvent power of liquid 



cyanogen, 67. 



Goschen (Eight Hon. G. J.), elected, 97; 

 admitted, 139. 



Government Grant, account of appropria- 

 tion of, 1871, 60. 



Griess (P.) on some derivatives of ura- 

 midobenzoic acid, 168. 



Grote (G.), obituary notice of, iii. 



Hai dinger (W. K. Bitter von), obituary 



notice of, xxv. 

 Harcourt (W. V. V.), obituary notice of, 



xiii. 



Hartley (W. N.), experiments concerning 

 the evolution of life from lifeless matter, 

 140. 



Haughton (Bev. S.) on some elementary 

 principles in animal mechanics : No. V. 

 On the most perfect form of a plane 

 quadrilateral muscle connecting two 

 bones, 328 ; No. VI. Theory of skew 

 muscles, and investigation of the con- 

 ditions necessary for maximum work, 

 330. 



Hayden (W.), approximate geometrical 

 solutions of the problems of the dupli- 

 cation of the cube and of the quadrature 

 of the circle, 525. 



Heat, action of, on the paraffins, 488. 



, experiments made to determine sur- 

 face-conductivity for, in absolute mea- 

 sure, 90. 



, on the mechanical equivalent of, 55. 



Heliograph, on observations taken with 



the Kew, 199. 

 Herschel (Sir J. F. W.), obituary notice 



of, xvii. 



Hofmann (A. W.), contributions towards 

 the history of the ethylene bases, 425. 



, new researches on the phosphorus 



bases, 221. 



and Geyger (A.), colouring-matters 



derived from aromatic azodiamines, 

 431. 



Horn stein (C.) on a periodic change of 

 the elements of the force of terrestrial 

 magnetism, 21. 



Huggins (W.), note on the spectrum of 

 Encke's comet, 45. 



3 A 



