Index. 



479 



Plaiinui occkdeatalis, sap of, analyzed, 



470. 

 Plumbago, substance resembling, from 



ca-t-iion tubes, 66. 

 Plyiiiuutli, weather at, for six months, 



iW4. 

 . lime-stone, shells found in, 



150, 311, 319. 

 Poisons, treatise oil, 382. 

 Porphyry in transition and tloetz rocks, 



78. 

 Porrctt, Mr. on ferrureted and sulphn- 

 reted chyazic acid, 25 -analysis of 

 pnissiate of mercury and prussic 

 acid, hy, 454. 

 Port Jackson, latitude of, 154. 

 Postman of Jaen de Bracamoros, 16, 

 Pdtasli as a poison, 380. 

 Potassium, making of, 349. 

 Potassureted hydrogen gas, 16. 

 Potatiie Hour, proposal for extending 



its use, 351. 

 Potatoes, comparative examination of, 



39. 

 Prehnite, analysis of, 45. 

 Pressure, etloct of, in causing bodies to 



polarize light, 143. 

 Prevost's explanation of theeffect of ice 



on a thermometer vindicated, 3.'j8. 

 Pring, Mr. Daniel, on the focal po wcr 



of the eye, 393. 

 Pritchard, l)r. researches, by, into the 



physical hitlory of man, 379. 

 Proportions, definite, on, 93. 

 Prout, Dr. experiments, by, on the sap 

 of the vine, 109 — -on the excrement 

 of the boa constrictor, 413 — on the 

 liquor amnii of a cow, 416— on the 

 ink of the cutlle fi-.h, 417. 

 Prunus |>adus, bark of, contains prus- 



gic acid, VH. 

 Prussiaie of mercury, analysis of, 455. 

 Priisfcic acid, analysis ot, 454. 

 Pyrites, magnetic, analysis of, 78. 

 Pyrophorus, on, 348. 



Q. 



Quartz rock, structure of, 147, 3U. 

 Queries, 313. 



R. 



Rennel, Major, on a current setting on 



the Scilly islands, 388. 

 Rciiis, essay on, 81, 275. 

 Respiration, on, 42V. 

 Rhodium, how reduced, 21 — oxides of, 



aii.ilyzcd, 20. 

 Ritienlionse, Dr. David, biographical 



account of, lt)l. 

 Rocks, coiiglonii-raird, on, i.S9. 

 Rook, Mr. iJohn, on deepening of 



haibdurs, VOf). 

 RoM', Mr. on the urine in hepatitis, 424. 

 Royal Society, oHiie bc.ireii, of, 68 — 



ineetiugs, f>S, 1 12. 2 '7, .•>'(»7, .'187, 432. 

 Ruiufurd, Count, life of, ^41. 



Saccharate of lead, 263. 

 Saccharometer, on, 156. 

 Saclactic acid, composition of, 179. 

 Saccolate of lead, 268. 

 St. Andrew's, mineralogy of , the neigh- 

 bourhood of, 138. 

 St. David's, Pembrokeshire, mineralogy 



of, 447. 

 St. Pierre, hill of, described, 229, 

 Sal-ammoniac, formation of, 31, 157. 

 Sap of trees, ascent of, 390. 

 Saus-ure, M. de, analysis, by, of alco- 

 hol and ether, ."il. 

 Srapolite analyzed, 50. 

 Sclierer, Professor, experiments, by, 

 on the sap of the acer campestre, 35. 

 Schiianbert, Professor, his method of 



separating gold from silver, 21. 

 Schorl, analysis of, 44. 

 Schrader, Mr. experiments, by, on 



plai:ts, 36. 

 Schwartz, C. F. on the salts in milk, 41. 

 Sciences, physical, late improvements 



in, 1. 

 Scilly isles, on a current setting on, 388. 

 Scorcsby, \Vm., Ksq. meteorological 

 joHrn:j|, by, 138 — on polar ice, 152. 

 Scott, Air., junction of the transition 

 and floeiz locks near Jedburgh, 152. 

 Sea-water, analysis of, 32. 

 Srelzen, Dr. account of, 312. 

 S Ikirk, Earl, on the mineralogy of 



Hudson's Bay, 146. 

 Sementini, M. experiments, by, on 



potassnieled hydrogen gas, 16. 

 Scppiiigs, Mr. on his improved mode 



of ship building, 452. 

 Serpentine anuly zcil, 51. 

 Sheet lead, Chinese method of casting, 



154. 

 Shell fish not found in Elgin Mo=s, 235. 

 Shells, new, found in Ireland, 152. 

 Sidmoiilh, annual meteorological table 



of the weather at, 215. 

 Silica, sublimation of, 452. 

 Silver as a poison, ;i84. 



mine, old, in Linlithgowshire, 



account of, 1 18. 

 Smith, Edward, Esq. description of the 

 stieam-worKsat Pentowan, by, 147. 

 Sodalile of l.kcberg, 49. 

 Solar spectrum, on, 159. 

 Sollv, S. Esq. on the newer formations, 



145. 

 Somersetshire, south-west of, described, 



391. 

 Simerliy, Mr. on fossil shells, 70. 

 Spinel], analysis of, 48. 

 Spodinnene aii.iKzed, .50. 

 Sponges, eisay on, 137. 

 S|iorls, Mr. Henry, uii the formation nf 



Hint, 144. 

 Stanh, experiments on, 37 — ung"!" 

 from, .'(5, 157 — potnloe, coinpLlilion 

 of, 272. 



