pe INDEX. isco 
Oil, clive, a cure for the plague, 110; 257. 
Oil-painting fimilar to the old Venetian ichool,. 3032 
_ Olivier’s travels in Greece, Turkey, Pertia, &c. 312, 
Olives, refult of fome experiments on, 187. 
~ Opium, the mode of extracting from poppies, 417. 
Ojjification, a fingular cafe of, 202. 
Oster, fadts refpecting its natural biftory, 413. 
Otto, F. W. obfervations on the Baitic fea, by, 37%. a 
Oxyds, aétion of, on vegetable-colouring matter, 126. 
O.ygen, corpulency caufed by a deficiency of, 123. 
———— combined with hydrogen to form water, 148, 317. 
Oxygenated muriatic acid, to prepare, 30, 293. 
ointment, 2, to prepare, 111, 224. 
——-—— remedies, efficacy of, in fyphilis, &c. 192. 
=" 
Painting in oil, Mr. Sheldrake’s differtation on, 302. 
Pallas, Profeffor, defcription of the dfhiggetai by, 113, 234. 
Pearly excrefcence, an extraordinary large one, 3 16.- : 
Pearfon, Dr. his experiments on urinary concretions, 38, 130. 
———.—- ———. Fourcroy’s examination of experiments by, 263, 380. 
Pcla/gi, account of a paper on them, 209. 
Philofophy of Mineralogy, account of Mr. Townfon’s work, entitled, 
Sif , ; 
Phofpborus adminiftered in-medicine, 29>. 
. Pietra fongaia (lapis fungifer), analyfis of, 319. 
Plague, a new method to cure and prevent, 110, 256, 
Platina, its utility in the arts, 19, 170. 
Pueumatic medic'ne, communication refpecting, 420. 
Polar ladies, fingutar ornament worn by, 145. 
Poppies, on the culture of, 417. 
Poultry, to fatten, 134. 
Prints, to clean and whiten, 28. 
Prize queftions, 98, 196, 421. 
Prufia, \etter from the Kine of, to the Berlin academy, ror. 
Pulfe, the feeds divided and fown produce plants, 187. 
Puirid difeafes, the ftate of the urine fhould be examined in, 250. 
Rattle-fnake, on the fafcinating power of, 251. 
Refraction, (mgular inftances of atmofpheric, 216, 232, 427. 
Retina of the eye not opaque, but traniparent, 215. 
Retorts, a coating for gla/s, 433. 
Rhus xadicans, phenomenon concerning, 187. 
Rollo, Dr. account of his work on the diabetes mellitus, 19¥. 
Rochon, Alexis, on platina, flint-glafs, and telefcopes, 19, 170. 
Royal Academy at Stockbolm, Tranfastions of, 319. : 
Royal Society of London, Vranfaétions of, 190, 213, 327- 
—— of Florence, Tranfactions of, 185. 
. at Gottingen, Proceedings of, 197. Try 
Rumford's, Count, experiments on the propagation of heat in 
fluids, 353. 
Rupp's procets for bleaching with the oxygenated muriatic acid, 293. 
Rufian expedition for making difcoveries in the N. E. fea, 141. 
; Saccharing 
