INDEX. 453 



Robiquet (M.), notice of the speculations of, on iho constitu- 

 tion of feno-prussiate of potash, 147 — 150 

 E.ock-crystal of primitive marble, observations on, 231, 232 

 Rocks, on the desquamation of, 237 — 257 

 Rooms, on the ventilation of, 113 — 120 

 Royal Society of London, proceedings of, 142, 317 



Salmon, analysis of the, 416 



Saussure, seeNecker. 



Scotland, remarks on the polemical discussions of the geolo- 

 gists and geognosts of, 167 — geological structure of the 

 country round Edinburgh, and on the hanks of the Firth of 

 Forth, 171 — 181. Scenery of Argyleshire delineated, 181. 

 Geology of the isle of Arran, 182— 190 ; and of the Hebrides, 

 192. General View of the geological structure of Scotland, 

 193—200 



Sea, elevation of, 230 ; encroachment of, in America, ibid. 231 



Seconds, table of equivalents for converting, into space, 394 ; 

 and into time, 395 



Secret Writing, observations on, 136 — 141 



Seine (River), purification of the water of, 423,424 



Shaw, (John, Esq.), on the effects produced on the human 

 countenance, by paralysis of the different systems of facial 

 nerves, 120 — 135 



Silver, new researches on the composition of the antimoniated 

 sulphuret of silver, 416, 417 



Soap, a substitute for oil, in setting cutting instruments, 221, 

 222 



Soda-alum, preparation and analysis of, 276 — 278 



Societies (Scientific), proceedings of — The Royal Society of 

 London, 142,317 



Sodo-cyanuret of mercury and potassium, 429 



South (James), astronomical observations by, in January and 

 February, 1822, 209—211, 386; observations of, on the 

 Admiralty chronometrical arrangements, 211 — 218 



Specific gravities of solid bodies, instrument for determining, 

 257 — 260 ; table of the specific gravities of prussic acid, 

 312, 313 ; test for ascertaining them, 313 — 315 



Stars — Mean places of forty-six Greenwich stars, 387 ; cor- 

 rections in right ascension of thirty-six principal stars, 388 

 —393 



Steam-Engine Indicator, description of, 91 — 96 



Steel Goods, process for preserving, 424 



Sub-nitrate of bismuth, a remedy for intermittent fever, 233 ', 

 on the sub-nitrates and super-nitrates, 396 



Sulphate of quinina, phosphorescence of, 146 



Sulphuric acid, action of, on muriates, 146, 147 

 Vol. Xlll. 2 1 



