INDEX, 509 



Metallic Disc in motion, its action on a portion of a voltaic con- 

 ductor, 228 



Metals, electro-conducting power of, 470 



Meteorological table, 248 — 503 



Metropolis, remarks on the supply of water to the western parts of, 

 249 — remarks on the architecture of, 352 



Micrometers, artificial cobwebs for, 8 1 



Micrometrical measurement of Saturn and of Jupiter and its satel- 

 lites, 220 



Microscope, diamond, notice of, 221 



Milk, observations on the use of as food, 403 



Mould (elastic) for castings, account of, 225 



Nakous, subterraneous noises heard at, 240 



Nasse (M.) on the preparation of oxide of chrome as a pigment, 23& 



Natural History, remarks on the study of, 83 



Nature, numerical divisions in, 362 



Naval architecture and nautical economy, essays and gleanings on, 



18 

 Navier, (M.) experiments on the resistance of various bodies to 



rupture caused by longitudinal tension, 223 

 ^ew York, remarks on the subject of the weights and measures of, 



101 

 Nobili, (M.) on electro-chemical appearances, 229 

 Numerical divisions in nature, 362 



Oils, essential substances contained in, 486 



Ornithological system of Cuvier and Dumeril, revised arrangement 

 of, with reference only to the genera and species of the British 

 islands, 286 



Ottley's Dictionary of Chemistry, remarks on, 54 



Oval, beautiful forms derived from, 457 



Oxalates, action of potassium on, 236 



Oxide of chrome, preparation of as a pigment, 235 — of iodine and 

 iodous acid, remarks on, 477 — of iron, (native) presence of am- 

 monia in, 481 



Ozmazone, notice of, 490 



Parkes, (Samuel, Esq.) sketch of the life of, 1 



Payen, (M.) his process for the preparation of medicinal chloride 



of soda, 236— on sugar of melons, 239 

 Pearls, production and preparation of, 493 

 Peretti, (M.) on ozmazone, 490 

 Peru, and Mexico, conquest of by the Mongols in the 13th centurv* 



history of, 247 ^ 



Phillips, (Mr. R.) on the analysis of the triple prussiate of potash, 236 

 Phosphorescence of fluate of lime, notice of, 232 

 Physiology, human, outlines of by Mr. Herbert Mayo, 91 



