380 INDEX. 



Lindiey, (Mr. John) account of the Prangos Hay pUnt of North- 

 ern India, 1-7 



Xoc^a6er mountains, observations on the parallel roads of, 195, 

 196 



Longitude^ remarks on the determination of, from observations of 

 the Moon's right ascension, 109-115 



Lunar Observations. See Moon 



Mac Culloch (Dr. John) observations of, on the origin, mate- 

 rials, composition, and analogies of rocks, 28-44 ; 200-213 ; on 

 the transportation of fish from salt to fresh-water, 235-243 



Magendie (Dr.) Experiments of, on feeding dogs with bread, 172 * 



Magnesia, geological notice of, 83 



Magnetism, memoir on the theory of, 122-131 ; influence of copper, 

 &c., on magnetic needles, 147 ; on the magnetism imparted to 

 iron bodies by rotation, 263-264 ; alteration in the magnetism 

 of an iron plate, occasioned by a rotation on its axis, 265-268 ; 

 repetition of M. Arago's experiments on the magnetism de- 

 veloped during the act of rotation, 276-278 ; observations 

 on the distribution and changes of the magnetic intensity in 

 ships of war, 333-335 ; on the mutual action of magnetic and 

 unmagnetic bodies, 336, 337 



i^/a7ra/ac^oWcs, new mode of warning, 137, 138 



Margosa oil, properties of, 172, 173 



Mechanical Science, intelligence in, 132-147; 328-336 



Merian (Professor) observations of, on ground ice or the ice of 

 running water, 364-366 



Meridian, description of a method of determining the direction 

 of, 270, 271 



Metals, preservation of, by electro- chemical means, 271-273; 

 cold, produced by the combination of, 341 



Meteorological diary for December 1824, and January and Fe- 

 bruary 1825, 175 ; for March, April, and May, 1825, 373 



Mexican coal, recently discovered, description of, 27, 28 



Mica, process for discovering titanium in, 157-159 



Microscopes, improvements in, 132-134 



Miscellaneous Intelligence 'm Mechanical Science, 132-147; 328- 

 336; in Chemical Science, 148-165; 336-360; in Natural 

 History, 166-174; 360-372 



Mitchell's theory of the earth, notice of, 69 



Moll (Dr. G.) and Van Beek (Dr. A.) experiments of, on the velo-* 

 city of sound in Holland, 108 



Mollerat (M.) on the culture of the potato, considered as to its 

 produce in potash and in roots, 331, 332 



Moon, remarks on the discordance of the observations on, made, 

 at Greenwich and at Paris, 116; and on the determination of the 

 longitude from observations of the moon's right ascension, 



