INDEX. 



Natural history, some i:«markable oc- 

 currences in, 236 



Natural philosophy, see Philosophy. 



Is'eedham, Mr. his discovery of auimal- 

 culae in diseased corn, 264 



Nenndorf, in Hesse, waters of, contain 

 sulphuretted nitrogen ga-s^ 41 



Newton, Sir Isaac, on colours, 129, 

 267 



Nordmark, Professor, his prize essay on 

 the resistance of fluids, 72 



Nutrition of vegetables, \b 



O, 



Oil, vessel fot preservuig free from co- 

 agulation, 79 



Oils, fixed, cdrabiuation of with oxides 

 of lead and with alkalies, 231 



Olbers, M. his discovery of a new 

 planet, 75 



O. N.'s description of a simple and con- 

 venient portable electfometer for mi- 

 neralogistis, 270 



P. 



Paring and burning land, examination 

 of its effects and their cat^ses, 21 



Pajot la Foret, M. 142 



Parkinson's description of the sea kale 

 erroneous, 100 — On British encrintes, 

 121 



farmentier, M. his opinion of the uses 

 of manure, 17 



Peaches, improvement in the manage- 

 ment of, 195 



Peacock's feathers, .summary consider- 

 ations on the colours of, 137 



Pearson, Dr. his medical and chemical 

 lectures, 160 



Perperrcs, M. on the causes of indiges- 

 tion, 66 



Petersburgh, Academy of SdeHces at, 

 j^vQceedings of, 70 



Philosophy, naturat, Dr. ToTing'f Te^ 

 tures in, 79 



Phosphoric ether, see ether. ' 



Physiology, lectures on, 160 



Phytolacca, or American pokeweel, 

 85 



Pigeon's neck, colours of, how producei| 

 138 



Pitcoal, facts towards a history of, 161 



Place, La, on determining heights by- 

 means of the barometer, 210 



Planet, new, discovered by M. OJbeis, 

 75 



Plants produced by means of air and 

 water only, contain less carbon than 

 their seeds, 15— Analysis of, 18 



Plants 1 tender, hints respecting the pro- 

 per mode of inuring them to the cli- 

 mate of England, 187 



Plasters and soaps, 231 



Porcelain, improvements in the fabrica- 

 tion of, 293 



Potatoes grow best in sand, 19 



Pottery, improvement of, 291 



Priestly, Dr. 24 



Prienr, M. on the prismatic colours of 

 bodies reduced to thin pellicles, with 

 an explanation of the colours of an- 

 i^ealed steel, and those of a pea- 

 cock's feathers, 128 



Prior, Mr. description of his larum for 

 pocket watches, 228 



Prismatic colours, see colours. 



Proteus Anguinus, description of, 91 



Proust, Professor, 77, 182— His expe- 

 riments on alcohol and lime, 23— 

 Memoir on the glaze of earthenware 

 incorrect, 292 — On pitcoal, 1 Gl— On 

 Indian corn, 239 



Pyrita^, copper and iron, effects of heat 

 on, 51, 201 



Quadrant and Stafti Mr. I^almon^s, de- 

 scribeil, 227 



Que;iPR*li 



