Index 



Sea-water, aeration of, 109 ; effect 

 of freezing on the salt in, 186. 



Sebastopol, difficulties and progress 

 in siege of, 126. 



Sections of corals for the micro- 

 scope, 211. 



Sedgwick, A., biography of, 22. 



Seeds, vitality of, and low tempera- 

 tures, 202. 



Seguin, M., inventor of wire bridges, 

 visit to, 131. 



Selkirk, Lord, finds a wind-worn 

 stone on Red Sea coast, 184. 



Senecio, adaptive forms of, 241. 



Serapis, Temple of, possible error in 

 estimating its height above sea- 

 level, 138. 



Sewerage, systems of, no. 



Shark, Basking, and Sea Serpent, 

 104. 



Sharp, D., election of, 88 ; bio- 

 graphical note on, 89 ; resigna- 

 tion of, 92. 



Sharpey, W., biography of, 20 ; 

 communications from, 136, 137, 

 140 ; placed on supernumerary 

 list, 72 ; death of, 75. 



Shells, Professor Abel's experiments 

 on bursting charges of, 200. 



Sheppey, find of bronze articles 

 and their moulds in, 190. 



Shide, Professor Milne on earth- 

 quake records from its Observa- 

 tory, 249. 



Shipwreck, due to weight of spray 

 frozen on the vessel's bows, 217. 



Siberia, glass bottles on coast of, 122. 



Sideroff, M., on working graphite 

 in Siberia, 160. 



Siemens, C. W., election of, and 

 biographical note on, 64 ; com- 

 munications from, 191, 194, 198, 

 199, 206, 208, 218 ; arranges 

 electric lighting at Royal Society's 

 rooms, 217. 



Sikkim, Dr. Hooker's imprisonment 

 in, in. 



Silicon, employed for plating a 

 dinner fork, 127. 



Simon, J., election of, and bio- 

 graphical note on, 60 ; communi*- 

 cation from, 202 ; placed on 

 honorary supernumerary list, 82. 



Siren, a steam, best for fog signals, 



193- 



Skogman, Capt., on measurement 

 of an arc of meridian, 118. 



Skull, human, with elk bones from 

 Nottingham drift, 155 ; of palaeo- 

 lithic man, described, 156. 



Skulls, dolichocephalic, from a cave 

 at Gibraltar, 172 ; penalty for 

 exhuming from a cemetery in 

 Japan, 175. 



Small-pox, effects of inoculation 

 with mixture of the virus and 

 milk, 173. 



Smith, A., election of, and bio- 

 graphical note on, 57 ; death of, 

 66 ; H. J. S., election of, and 

 biographical note on, 67 ; death 

 of, 78. 



Smyth, W. H., biography of, 26 ; 

 communication from, 128. 



Smythe, Colonel, mission of to the 

 Fiji Islands, 147. 



Snow-line in North India, varia- 

 tions in height of, 102. 



Societies, Scientific, juxtaposition 

 of, 27, 28, 30, 32, 33, 35, 37, 43 ; 

 joint meetings of, 32 ; report of 

 committee on, 33, 35, 37, 40 ; 

 proposals for accommodation of, 



44. 45- 



Sodium, absorption lines in spectrum 

 of, 190. 



Solar eclipses, photographs of the 

 recent, 155 ; that of Dec. 22, 

 1870, described, 187, 189. 



Solly, E., biography of, 20; resigna- 

 tion of, 54. 



Somerset House, occupation of, 

 28. 



Somme Valley, palaeolithic gravels 

 of, 146, 149. 



Sound, gamut of, and spectrum of 

 light, 185. 



Spectra of metallic vapours investi- 

 gated by Professors Dewar and 

 Liveing, 217. 



Spectral lines, methods for obtaining 

 a reversal of, 190. 



Spectroscope, a new form of the, and 

 its effects, 162 ; applied to exa- 

 mination of Saturn and its ring, 

 172. 



