INDEX. 



3°7 



Pepys's gazo-clienncal apparatus, 



253 

 Perjia. Engelman's journey in, 



217 

 Peruvian larh. Subftitute for, 



266 

 Philomaiic fociety of P. ins, 280 

 Phofphate of c pfer. Native, 89 

 Phojphaled lead ore. Analylis of, 



Phyfus employ the fame mode of 

 reafoning as mathematics, 294 



Pbyjiclogy of animals, 278 : of 

 vegetables, 279 



Plaet {Profejfor), letter from, 



149 



Planet. The new, 19], 268,379 



Plant i, on the growth of, 158 



Platina. Experiments on, 44, 



118 



Poore (Sir John Mdhieu), let- 

 ter from, 91 



Pompeii. On the dedruflion of. 



Potatoes. On the culture of, 



91 

 Potajl}. Experiments with, on 



affinities, 341,342 



Precepts for artills, &c. 1 44 



Prize quejlions, 81,86,87, ^7^' 

 269, 282, 283, 378 

 /'r<»z^ on platina, 44, 118 



Priijfian blue changed to white, 



89 

 Publications, new, 177, 263 



Recipes for artifts, &c^ 1 44 



Refrigeration. A prize qucflion, 



378 



Rfpiration where the air cannot 

 be renewed, 278 



B.'jberton'' s furnace for confuin- 

 iiig its own imoke, 6^ 



Royal medical academy at Barce- 

 lona, 2 S3 



R'jyal fociety. Hillory of the, 



29, 168 : proceedings of, 176, 



2C8, 377 



Ruffttt. Dcftrudtive infedlstouii'l 

 ill, 14 J 



Siicchnrum of the antients, 5 



Safpuivcr. Experiments on dye- 



ing with, 58 



Sages analyfis of phofphated 



lead 



ore. 



Savage of Av.yron. Interefting 



particulars refpefting the, 55 

 Schumacher^, Profejfor, medlco- 



chirurgical obiervaiions, 266 

 Silver, to gild, 14^, 147 



Smah-pox. A prize queliion, 87 

 Smoke. A furnace to con fume 



its own 65 



So:la in flones, 88 



So irties, Learned, 81, 176 



So'Jllce. The winter, of 1 8oi,3i;G» 

 Southern on the equilibrium of 



arches, 97 : on friction, 377 

 Spider. Manner in which it fpins 



its web, 320 



Spirit of wine. On diftilling. 



Star. The new, 191,268,379 



Siatifiics, 1 92 



'Stcii. To gild, 144: on the 



converfion of into iron, by 



means of the diamond, 289 



Stcne pipe formed in a leaden one, 



.90 



Stronttan. Experiments with, 

 on affinities, 342 



Sugar. Hiftory of, 3 



Sjimmer fjlice oi l8oi, 181 



Sun. On the fpots of the, 39, 91 

 Sun. Influence of on barome- 

 ter, iji 

 Sulphur. Quiantity in fulphuric 

 acid, 1 12 

 Sulphuric acid, quantity in ful- 

 phates, 1 1 2 



Tunning. Defmond's new pro- 



ccls, 19 



. Expetinicnts on, 19c, 



"Tefis, the capital ot Georgia, 

 defcribed, 217 



IVjermonie/er ufcful to mariners 



in determining their approach 



to land, 359 



Titanium^ 



