4Z2 INDEX. 



Inscription, ancient, from Meroe, 300. Conjectures thereon, 304 



Joditie, process for obtaining the cyanuretof, 173 



Iro7i, action of, in motion, upon tempered steel, 160-162. Nature 



of the scales of, when heated, 387. Reduction of the oxide of 



by cementation, 388, 389 

 Itahj, remarks on the wines of, 132, 133 

 Ivory (Mr.,) observations and calculations of, on astronomical 



refractions, 373-377 



Jameson (Professor,) analysis of mountain tallow by, 187 

 Jeffreys (Mr.,) account of the method invented by, for condensing 



smoke, 4-c., 270, 271 

 Jenner (Dr. Edward,) observations of, on the migration of birds, 



138-142 



Kramp (M.,) observations of, on Sir Isaac Newton's table of 

 refractions, 358-360. Remarks on his mathematical theory of 

 refractions, 363, 364 



Lake Superior, account of the geography and geology of, 1-34, 



228-269 

 Lalande (M.,) error in the logarithmic tables of, corrected, 347 

 Languedoc, wines of, 128 

 Lapidary's wheel for cutting stones, in the East Indies, account of, 



380 

 Laiihide at sea, method of finding, by the altitudes of two fixed 



stars, when on the same vertical, 99-110 

 Laugier (M.,) analysis by, of meteoric stones fallen in Poland, 



389-392 ; and of the volcanic saline matter thrown out of 



Vesuvius, 407 

 Laurel, nature and properties of the native oil of, 47-50 

 Leslie (Mr.,) invention of, for conducting examinations under 



water, 167 

 Light, effect of, on the colour of sodalite, 179. On the light of 



incandescent bodies, 384 

 Lightning, effects of on the human body, 190, 191 

 Ximes^one of Aberthaw, analysis of, 187 

 Linant (M.,) account of his expedition to Sennaar, 298-304 

 Lunar distance, correction of, by means of Mr. Thomson's lunar 



and horary tables, 339, 340 

 Lyonnais, wines of, 127, 128 



Mac Culloch (Dr. J.,) observations of, on the concretionary and 

 crystalline structures of rocks, 60-80. Suggestion of, for the 

 preservation of copper-plates, 167, 168 



Mace, experiments on the oil of, 317-319 



Madeira Wines, account of, 133 



Magnetism of an iron shell over the rates of a chronometer, efTects 

 of, 34-47 



