C 6*3 3 
o. 
Off cation* An oMcation of the Thoracic dud, p. 323. 378* 
CJiend '. Salubrity of the air of, eflimated, p. 374. A remarkable healthy place, 
p. 376. 
Ovals . Properties of the engine for turning them in wood or metal, p. 378, And of 
that for drawing them on paper, ibid, 
Ottaiano * Account of it during an eruption of Vefuvius, p. 68. 
Ox’ s fat. Experiments on an acid made of it, p. 1 1 1. Eafier method of obtaining the 
acid made of, p. 1 27. 
Fo 
v 
Vambamaroa . Singular mill obferved there, p. 160* 
P er rival. Dr. Account of a new and cheap method of preparing pot^afh, p. 345* 
Pea-hen. One with the feathers of the cock, p. 334. 
Pheafant. Account of an exraordinary, p. 527. Examination of a hen pheafant with 
the feathers of the cock, p. 53 2. 
Philofophical Tranfadtions. Cafes adduced from, in fupport of the fmall-pox being com- 
municable to the foetus by infection, p. 138. 
Pigeons. Experiments on, with the poifon of Ticunas, p. 160. 175. 177. 185. 191& 
and with the oil of Tobacco, p. 209. 
Poifon. Remarks on that of Ticunas, p.J 163. And comparifon of it with that of 
vipers , p . 168. See Ticunas * 
Pot-ajh . Acccount of a new and cheap method of preparing it, p. 343. Profits of 
this method, 343. Chemical analylis of a particular kind of, p. 349. 
Priejlley , Dr. Two inftances of extraordinary meteors mentioned in his hiflory of light 
and colours, p. 139* 
Prujjian-llue. Propofal for improving the manufacture of, p. 331* 
Putrefattion . A product of, not noticed by chymifls, p* 330. 
Putrid. Account of a fatal putrid diforder at Senegambia, p. 480* 
Pumice flone . Pieces of a fub fiance very much like it, flicking to fragments of lava, p. 8i» 
Pyrophorus. Experiment to fliew whether Homberg’s is impaired by light, p. 392* 
Qz. 
Quickjlfoer* Ufed for the cure of the fifhila lachiymalis, p. 
4 L & 
