INDEX. 



Naime, Mr. his electrical machine, 43 



*leu, P. Esq. 318 



Newton, Sir. I. his discovery of colour- 

 ed concentric rings between two ob- 

 ject-glasses, laid one upon the other, 

 121, 177— On light, 143 



>}. R. D. letter from, containing some 

 remarks on, and emendations of La 

 Lande's guide to the constellations, 

 173 



Nutgalls compared with Peruvian bark, 

 119 



Oakcs, Mr. 156, 307 



Oil of the Chinese radish, 79 



Olbers, Dr. on the nature of the new 



celestial body discovered by him, 259 

 Oliviero, Dr. Francis de, BO 

 Ophiucus, or Serpentarius, its situation 



and description, 7, 173 

 Orion described, 3, 4 

 Orpiment examined, 74 



P. 



Painters and Glaziers, improved ma- 

 chine for, 13 



Pallas, M. his experiment at conquer- 

 ing the torpid disposition of a mar- 

 mot, 169 



Park, Mungo, his account of the but- 

 ter-tree of Africa, 376 



Parry, Dr. on the causes of the decay of 

 wood, and the means of preventing 

 it, 328 



Paul, Mr on camphorated water, 26 



Pt-gasus, description of its appearance 

 and situation among the stars, 5 



Pendulum, a mercurial, described, 258 



Pcpy*, W. II. Esq. bis new eudiometer 

 described, 86 — On the quantity of 

 carbon in carbonic acid, and on the 

 nature of the diamond, 216 



Perseus, the constellation, described, 4 



Peruvian bark, see Bark. 



Philommatos's account of an accident 

 from the sudden deflagration of the 

 base of potash) 146 



Phosphorescence of bodies froril the 

 action of the electric explosion, 153 



Pisces, its situation and description, 10, 

 174 



Plants, medicinal properties of, 17 



Playfair, Professor, on veins of mine- 

 rals, 319 



PIaz, 17 



Pleiades, the, described, 3 



Plot, Dr. 168 



Pole of the ecliptic, directions for find- 

 ing, 10. 



Pont de Nemours, M. Du, on the tor- 

 pidity of animals, 161 



Poppy, culture of, for oil, 282 



Poske, Mr. 290 



Potash, decomposition of, by Galva- 

 nism, 156 



Potash and its base, experiments and 

 observations on, 307 



Pott, Mr. on the cataract of the eye, 

 106 



Potatos, on raising new and early va- 

 rieties of, 97 



Prato, Dr. J. C. de, in answer to some 

 observations of M. Dispan, on the 

 pretended attraction of surface be- 

 tween oil and water, 14 



Priestley, Dr. on the different kinds of 

 air, 87 



Procyon, its situation and appearance,. 3 



Proust, M. on orpiment, 75 



Pyrophysalite, description and chemical 

 analysis of, 33 



P. 



Raphanus Sinensis, 80 



Reade, Dr. J. description of his newly 



invented calorimeter, 197 

 Realgar examined, 74 

 Regulus, its situation, 4 

 Reus, M. 380 



Rigel, 



