INDEX. 



381 



Opium from poppies, 134 ; from 

 lettuce, 135 J remedy for 

 over-dose of 1 80 



Orchards^ on freeing, from in- 

 sects, (i3 

 Oven. An improved one, 30 

 Oxalic acid formed in a mixture 

 of suljjhuricacid and alcohol S8 

 Oxyiisnated muriatic gas, 2/2 

 Oxgyen gas, on the quantity of, 

 in the atmosphere 250 

 Pain em})kned to counteract the 

 effects of opium, 1 86' 

 Paintings in mosaic, 292 

 Palissey., /Q 

 Palm, a new genus of, 17-+: 

 yields a kind of sugar, 1 75 

 Parace/sTts, 79 

 ParcevaL, De, 7 

 Paulian, the ex-jesuit, death of, 



Pearl' ashes f to test, 277 



Pendulums, improved, 299 



Persepo/itan characters, 375 

 Petroleum wellsy account of, 220 

 Philadelphia Medical Society, SQ 

 Philoma tic Society , Paris, 87, 1 73 

 Philosophical Transactions, 268 

 Physical Priuciplesof Chemistry , 



account of Brisson's 269 



Plants, light destroys young, 249 

 Plants, a prize question on, 284 

 Play fair, Mr. 14 



Pliny , re m a r k s o f, 123,2 Q\i 

 Poilevin, 1 2 



Potash, on the formation of, 89j 



to test, 276 



prize medal, Count Rumford's, 



317 

 Prize fjueUions, 6. SQ, 253 



Priestley, Dr., yg, 80, 250, 25 i, 

 286. 288 

 Prony, 1 C) 



Ptolemy Epiphanes, inscriptions 

 respecting, 142 



Pullications, new, 91, 268 



Pule.x, new species of, 87 



purple dye origin of, 201 : ex- 

 periments on, 211 

 Pyrometer; on Wedgwood's, 

 153 



Quenot, 12 



Quicksilver, impurities of, to de- 

 tect, 277 



Rainnnghong, position of, 227 

 Rams den, IO6 



Roy, 79 



Richters galvanic experiments, 



222 

 Rittenliouse on tinie-keepers;298 

 Roman coins, 2000 found, 92 

 Royal Institution of Great Bri- 

 tain, 281 

 Royal Society of London, 85, 

 170,268,280,370 

 Ruviford, Count, life of, 315 



S. Fernando d' Atahapo., position 



of, 367 



San Carlos del Rio Negro, posi-" 



tion of, 367 



Sap of vegetables, experiments 



on, ' 176 



Saturn, 7, 6 



Saussure, 250 



Scheele, ■ J 99, 251 



Schroeter, 12, 86, 106, 109 

 Science, a question on, 283 



Seguin, 63 



Stnebier. Air, 251 



Scrrcs , Oli v ier d e, 1 3 1 



Shucld'urgh, Sir George, 105 

 Silver, a vein of, in Hurland 



mine, s6 



Sines, new tables of, JO 



Siren, on a new species of, 1 18 

 Soc. of N'at. Hist, at Paris, 87 

 Soda, on the formation of, 89 

 Solstices, ancient position of, 92, 

 112 

 Sound, experiments on, 285 

 Specu lu m o f p 1 a t i na , 103 



Spirits from ujare's milk, I68 

 Stars, Schroeter on fixed, 86 

 Steam engine, a new one, 300 

 Steam advantageously employed 



in bleaching, 319 



5/ee/,new process for making, 235 

 iS/or^Ao/w, academy of, 108 



Sugar from a species of palm, 



1 7^ : from beets, 1 84 



Sun, 



