INDEX. 



Parotetti, BTodeste, on the influence 

 that light exerts on the propagation 

 of sound, 28 



Pearson, Dr. G. on expectorated mat- 

 ter, 21G, 260 



Pechblende, an ore of Uranium, 69 



Pepper cultivated in the West Indies, 

 317 



Pepys, W. H. Esq. on respiiation, 294, 

 SSI 



•~ ■- — on the transmission of air 



into the blood, 91 



PeroUe, M. his experiments on tiie 

 influence of light on the propagation 

 of sound, 37 



Peyrard's burning mirror, 377 



Phosphates decomposed by charcoal, 

 2S\ 



Phosphorus in seeds, 279 



' experiments on the combi- 

 nation of with metals, 368 



Pickle of violets, 233 



Pictet, M. 109 



Pipes of metal, method of joixVing, 284 



Platina of the Brazils, analysis of, 18 — 

 Experiments on, 65 



Porrett, R. juu. on the prussic acid, 

 344 



Poiassated iron, 51 



Potassium, metal of, means of procur- 

 ing, 191 



Pott, on the existence of phosphorus in 

 seeds, 279 



Precipitation of oxides by means of their 

 own metals, 39 



Priestley, Dr. on sound, 37 



Prieur, M. on the double refraction of 

 crystals of sulphate of copper,. 308 



Proust, M. his method of purifying 

 nickel, 62 — His analysis of the ox- 

 ides of copper, 72 



Prussic acid, see Acid 



Prussous acid, see Acid 



Pyrites, capillary, 384 



Q. 



Quadrant at Greenwich, 110 

 Queries on various subjects, 285 



R. 



Rain in the year 1809, table of, 309 



Ramsden's method of dividing instru- 

 ments, 7 



Refraction, double, of crystals of blue- 

 vitriol, £0» 



Rehmann, Dr. on the cold of 1809, 76 



Respiration, ^8, 229, 294, 331 



Rhubarb, oxalic acid in, 235 



Ritter on the decomposition of water, 40 



Robiquet, M. on the purification of 

 nickel by means of sulphuretted hy- 

 drogen, 61 



Rochon, Mr. 135 



Roe of fishes, ana.lysis of, 273 



Romedel'Isle, M. 68 



Roots of plants, origin and formation 

 of, 118 



Rose, M. his experiments on platina, 

 G5 



— — on the solubility of castoc 



oil, 79 



Rospini's large burning lens, 99 



Roy, General, 109 



S. 



Salting vegetables, uses of, 233 



Saussure, T. de, 'on the phosphorus 



that seeds afford by distillation ; and 



on the decomposition of alkaline 



phosphates by charcoal, 279 



Scheele's discovery of oxalate of lime 



in rhubarb, 235 

 Scientific News, 72, 239, 313 

 Scoresby, Mr. W. on the meteorology 



of Greenland, 239 

 on the natural his- 

 tory of the whale, 318 

 Scottish gems, 72 



Sennebier on the dionxa muscipula, 92 

 Sheldrake, Mr. on the use of the ca- 

 mera lucida, as a substitute for the 

 camera obscura, 173 

 Shells found in gypsum, 313 

 Shrouds for ships, improved, 357 

 Signals, communication by, 325 

 Simon, M. on electric repulsion, 77 



rSmeatoo. 



