446 INDEX. 



Rain (coloured), notice of, 201. 



Red Snow of the Alps, analysis of, 199-201. 



Refractive Powers of muriatic acid, 181. 



Ripley's " Compound of Alchi/mie," extract from, 231. 



Robiquet (M.), experiments of, on the nature of Prussian blue, 



179-181. 

 Royal Society, proceedings of, 148-346. 

 Rutherford, (Dr.) death of, 214. 



Sabrina island, account of the formation of, 414-417. 



San Felix (Capuchin mission of) notice of, 26. 



San Joaquin (Capuchin mission of) notice of, 28. 



San Miguel (Capuchin mission of) notice of, 26, 27. 



Santa Clara (Capuchin mission of) state of, 17. 



Savages and Europeans, results of the comparative strength of, 

 213. 



Schools (Lancasterian), progress of in Spain, Portugal, and Den- 

 mark, 212. 



Schools of mutual instruction at Paris and in France, progress 

 of, 212, 213. 



Scissors, improvement on, 173, 174, 391. 



Secreting Power of animals, observations on, 251-264. 



Shawl-Goat, account of attempts made for the introduction of, 

 into Great Britain, 330-339 — accounts of the habits, treat- 

 ment, and produce of these animals, 339 — 346. 



Siderographic engraving, process of, described, 12.5-128. 



Silures, or cat-fishes of the river Ohio, description of, 48 — • 

 with forked tails, ibid, 49 — with a bi-lobed tail, 50 — with an 

 entire tail, 50-52, 



Silver, economical mode of preparing nitrate of, 405. 



Silver Cup, antique, found in North America, 210. 



Siren, anew acoustical machine described, 175-177. 



Smith (Professor) on the use of prussic acid in consumptive 

 cases, 418-420. 



Soap, notice of a new animal one, 409. 



Society (Royal) 148, 346. 



Soda of commerce, assay of, 410. 



Steel, experiments on the alloys of, with a view to its improve- 

 ment, 319-330. 



Stodart, (J. Esq.) experiments of on alloys of steel, 319-330. 



Stratification of the Forest of Dean, and of the opposite banks 

 of the Severn, 37-48. 



Straw, a conductor for lightning, 199. 



Strength, comparative, of Europeans and Savages, 213 



jSMi^ima^e (corrosive) antidote for, 401. 402. 



Succinic Acid, formation of, 410. 



