162 INDEX. 



Pompeii, successful excavation at, viii. 189. x. 202 



Pompey's pillar, the column so called, erected in honour of the 



Emperor Dioclesian, x. 6 

 Pond (Mr.), Lalande's medal awarded to, v. 120 ; and that of 



the Royal Academy of Sciences at Paris, 354 



predicted and observed places of the principal stars, by, 



XV. 135 



— address to, on his receiving the Copley medal, xvi. 298. 

 Observations of, on some of the changes which have taken place 

 in the declination of some of the principal fixed stars, 328 ; 

 and on the parallax of a, Lyrse, 329. xvii. 130 



' methodby, of determining the direction of the meridian, xix. 



270. On the annual variation of some of the principal fixed 

 stars, 278 



Poppies, on the manufacture of British opium from, viii. 234 



on the culture of, ix. 70. Their juice, how to be col- 

 lected and manufactured into opium, 71 



Population of Paris, x. 202. Of Sweden, ih. Of Glasgow, ih. 

 Of America, 203. Of Great Britian, remarks on the change 

 of, as divided into the classes of agriculturists, manufacturers, 

 and non-productive labourers, 203 



Populousness of England, observations on the measure of, v. 305 



Porcelain-glaze, notice of, xi. 392. 



clay (new), vein of, discovered, xiv. 453 



Portal (M.), experiments of, on vomiting, iv. 91 



Port-Royal mountains, Jamaica, barometrical measurement of, 

 XV. 70 



Portugal, remarks on the wines of, xviii. 130 



Portuguese, inhabitants of Batavia, character of, vii. 12 



Potash, tartrate of, and manganese, vi. 158. Experiments on 

 nitric acid with the sub-carbonate of, 254. Calcination of, 

 with animal substances, 356. Lampate of, 321 



— experiments on, vii. 387 



> . ■ — action of, on the chloride and oxide of gold, x. 119. 

 Muriate of, found in salt, 181. Analysis of the chromate of, 453 



, obtainable from potatoes, xi. 382. Analysis [of 



