INDEX. 



Oxlgen and hydrogen, mixture of, re- 

 markable fact refpe&ing their difappear- 

 ance in an inverted bottle with water, 



Oxigenated muriatic acid, action of, on 

 green feculse, 17 



Parmentier, 16 



* — — Cit. on the compofition and 



ufe of chocolate, 175 



Parting, 71 



Painting, a new method of, 139 



Palladium, metal, the fo called, 136 



Parkinfon, 64 



Papin's digefter, 42 



Parry, Dr. on Spanifh fheep, 68 



Pattrick, Mr. his defcription of an im- 

 proved armillary fphere, 143 



Paul, Mr. N. his improvement in the 

 iConftrucYion of lamps and reflectors, 



133 

 Pearfon, Dr. 236 

 P. Metier, 131 

 Pheafants, 167 

 Phofphorus, the combuftion of by the in- 



vifible rays of the folar fpettrum, 255 

 Plants, Templeton on the naturalization 



of, 145 

 Plantations, 155 • 

 Precipitate, metallic found in chocolate, 



179 

 Praeguftator, 1 

 Prieitley, M. 51 



Dr. 185, 230 

 Prize queftion, 223 

 Prouft, profeflbr, on the fecula of green 



plants, 16 



■ 97, 220 

 Prouft, M. 256 

 Prony, 211 



Propolis of bees, analyfis of* 48, 



■ refin of, 49 

 Potafh, 24 

 Pouhon Water, 233 



Prufllc acid, 277 



■ — lixivium, 279 



Pruffire, 277 

 Prufiiurets, ib. 

 Prufliatcs, ib* 

 Pyrites, ib. 

 Pyrmont water, 230 



Quick firing, account of two muflcets for, 

 116 



> ; ■' inventions for, by the Mar- 



quis of Worcefter, 118 



Rain, on, by R. Kir wan, Efq. XzX 



— — Prognoftication of, 1 25 



Raw filk, wax of, 26 



Refining, new procefs of, 70 



Refin of propolis, 49 



Rhododendron maximum, 170 



Ritter, Mr. his experiments on the invi- 



fible rays of the folar fpectrum, 25 

 Robert, Cit. his experiments on detoaa- 



tion, 189 

 Roffi, Cit. 11 j 

 Rouelle, 22 

 Roy, General, 214 



S. 



Saffron, 27 



Sandtorius, 50 



Saint Domingo, 175 



Salix herbacea, 154 



Sauffure, M. 242 



Schmidt, Mr. his tables of expanfion, 



211 

 Schmidt, his experiments on the ftate of 



vapour fubfifting in the atmofphere, 242 

 Scientific news, 54, 220 

 Screw blafting, 33 



Sea-lalt, its ufe in edulcorating oils, 10 

 Seguin, 35 



*5« 



S heldrake* 



