INDEX. 



543 



Refraction, ou various phaenomena of, 

 through semi-lenses or prisms, 71- 



Reinsch (Dr. H.) on the influence ex- 

 ercised on the magnetic needle by 

 musical strings in a state of reso- 

 nance, 222. 



Reiset (M.) on the phaenomena of 

 ])utrefaction, 502. 



Richardson (Dr. T.) on the analj-sis 

 of waters from the Turko-Persian 

 fi'outier, 147. 



Riche (JI.) on tungsten and some of 

 its compounds, 122. 



Ricinoleic acid, on the action of pot- 

 ash on, 184. 



Riess (P.) on electrical heat, 223 ; on 

 electric pauses, 261. 



Rock-basins, on the formation of, 213. 



Roscoe (H. E.) on the measurement 

 of the chemical action of light, 521. 



Rose(H.) on tantalum and its com- 

 pounds, 275 ; on the atomic weight 

 of antimonj-, 120. 



Roval Society, proceedings of the, 71, 

 129, 194, 276, 373, 452, 510. 



Rubidge (R. N.) on the copper-mines 

 of Xamaqualand, 214. 



Sabine (Major-Gen. E.) on the lunar- 

 diurnal magnetic variation at To- 

 ronto, 458. 



Salmon (Rev. G.) on the problem of 

 the in-and-circumscribed triangle, 

 190, 267 ; on the problem of the 

 in-and-circumscribed polygon, 337. 



Salter (J. W.) on two Silurian species 

 o{ Acidaspis, 211. 



Salts, on an apparatus for determining 

 the solubility of, at high tempera- 

 tures, 304. 



Scheerer's (Dr.) Introduction to the 

 Use of the Blowpipe, reviewed, 70. 



Sehefczik (A.) on the movements of 

 the floating crystals of some organic 

 acids, 149. 



Schmidt (Prof.) on the Silurian rocks 

 and fossils of the Baltic provinces 

 of Russia, 529. 



Schneider (M.) on the atomic weight 

 of antimony, 120. 



Schfinbein (C. S.) on the connexion 

 of catalytic jihaenomena with allo- 

 tropy, 248, 440. 



Schonfeld (M.) on the coefficient of 

 absorption in water, for sulphurous 

 acid, sulphuretted liydrogen and 

 chlorine, 118. 



Sea-water, on the specific gravity of, 

 523 ; on the existence of silver in, 

 524. 



Sedgwick (Rev. Prof.) on a passage in 

 the President's Address delivered 

 at the Anniversaiy Meeting of the 

 Geological Society of London on 

 the 15th of Februkry 1856, 176. 



Se'quard (E. B.) ou the action of cer- 

 tain parts of the solar spectrum 

 upon the iris, 520. 



Shooting-stars, observations on, 220. 



Silicon, on the various forms of, 269. 



Silurian rocks and fossils of Norway 

 and the Baltic provinces of Russia, 

 on the, 529. 



Silver, on the existence of, in sea- 

 water, 524. 



Sodium, on the electric conducting 

 power of, 86, 148. 



Solar spectrum, on the action of cer- 

 tain parts of the, upon the iris, 520. 



Solutions, on the homogeneity of, 506. 



Sound, on the velocity of, 533. 



Sounds produced by the combustion 

 of gases in tubes, on the, 473. 



Souza (Prof. Gomes de) on the deter- 

 mination of unknown functions 

 which are involved under definite 

 integrals, 195. 



Spratt (Capt. T.) on some freshwater 

 depositsinEuboeaandSalonika,146. 



Stars, on the twinkhng of the, 301. 



Stereoscope, on new forms of the 

 78, 105, 218. 



Stereoscopic pictures, on some ano- 

 malies in the illusion of, 71- 



Stewart (B.) on an instrument for re- 

 gistering changes of temperature, 

 453. 



Stilbite, on the composition of, 509. 



Stohrer (E.) on an improved induction 

 apparatus, 55. 



Stokes (Prof. G. G.) on the polariza- 

 tion of diffracted light, 159. 



Storms, observations on, 299. 



Strontium, on the electric conducting 

 power of, >^('). 



Strychnine, on the detection of, 1 97. 



Sulpho-acids, remarks on the, 276. 



Sulphobenzole and compounds, on, 

 185. 



Sun's rays, on the heat in the, 167. 



Tactions, analytical solution of the 

 ])robleni of, 507. 



Tantalum and its compounds, on, 275. 



