410 INDEX. 



the Royal Academy of Inscriptions, at Paris, 193, 194. — In 

 mathematics and geology, by the Royal Academy of Copen- 

 hagen, 194. — In Astronomy, by the Royal Academy of Sci- 

 ences of Naples, 345. — In medicine, by the Royal Society of 

 Sciences, at Paris, 361, and by the Society of Practical Medi- 

 cine, at Paris, 362. — In philology, by the Royal Society of 

 Gottingen, 395. 



Publications, (New) select list of, 199, 397. 



Purple Colour, new, for oil-painting, 380, 381. — Of cassius, new 

 method of preparing, 385. 



Purpuric Acid, directions for preparing, 373, 374. 



Pyroligneous Acid, proved not to be discovered by the French, 

 368, 369. 



Q. 



Questions. — See Prize Questions, Scientific Questions. 



R. 



Royal Society, proceedings of, 337. — List of its officers, 338. 



San Antonio, capuchin mission of, described, 266. 

 Santa Maria, a capuchin mission in Spanish Guayana, present- 

 state of, 283, 284. 

 Scientific Questions, proposed by the Royal Academy of Sciences, 



^c, at Brussels, 194, 19.5. 

 Sea-Water, analysis of, 167. 

 Siberia, account of the mammoth or fossil elephant discovered 



in, 95-108. 

 Silver, Persian mode of purifying, 160 — On the oxygenation of 



copper and silver, 168-170 — On the decomposition of the 



chloride of silver, by hydrogen and zinc, 374, 375. 

 Smoke, observations on some vulgar notions concerning, 245-247. 

 Smut in wheat, prevented, 348. 

 Societies, (proceedings of). — The Royal Society, 337, 338.— The 



Horticultural Society, 339-344. — The Royal Geological 



Society of Cornwall, 354, 355. 

 Soda alum, analysis of, 386. 

 Spider, singular anecdotes of, 174 — Floatage of, in the air, 



accounted for, 249, 250. 

 Spirit ofivine, economical mode of rectifying, 381. 

 Stars, investigation of the corrections of the places of, for 



aberration and nutation, 21-27 — Observations on the transits 



of^ 84 — Experiments on the light of, 92. 

 Stavesacre, new vegetable alkali found in, 154. 

 Steam Boats, list of, employed on the river Mississippi, 152 — 



