478 



Index. 



Lead, seleniuret of, MM. Stromcyer and 

 Uaussmann on, 233. 



sulphato-tri-carbonate of, 232, 



lieases, on the value of, 3S5. 



Lepas aiiatifera, 17. 



Levy, M. A. on two new minerals, her- 

 schelite and phillipsite, 361. 



Levyne, a new mineral, 75. 



Light of haloes, 395. 



Luminous snow-storm, 154. 



Lyell, C. Esq. notice of his paper on a 

 dyke of serpentuie cutting through sand- 

 stone, 149 — notice of his paper on qua- 

 drupeds imbedded in recent alluvial 

 strata, 229, 



N. 



Natural philosophy, 1, 44, 63, 69, 81, 



107, 151, 164, 218, 220, 258, 262, 



268, .SOI, 333, 394. 

 Naval improvement, CoL Beaufoy on, 



161. 

 Navy, the British, Mr. Major on a digest 



of the plans of ships in, 32 1 . 

 Nixon, Mr. his explanation of the theory 



of the barometrical measurement of 



heights, 44, 81, 164. 

 Nuts, singular fossil, 431. 



M. 



M'Keever, Dr. T. on the influence of so- 

 lar light on the process of combustion, 

 344. 



Mackintosh, Mr. C. his process for render- 

 ing cloth impervious to air and water, 

 155. 



3\ragnesia, hydrate of, 232. 



Magnesite, 233. 



Magnetism, 1, 151, 452. 



]Major, J. on a digest of the plans of ships 

 in the British navy, 321. 



Mammalia, the, on the natural disposition 

 of them into tribes and families, 337. 



Marble, flexible, Prof. Dewey on, 3 1 3. 



Marshall, W. Esq. notice of his paper on 

 carbonate of copper in magnesian lime- 

 stone, 151. 



Marsupial animals, on their umbilicus, 

 235, 



IMathematics, 335, 372. 



]Mathematical principles of chemical phi- 

 losophy, Rev. J. B. Emmett on, 372. 



Mercury, seleniuret of, 290. 



Meteoric stone, fall of, in North America, 

 186. 



l\Ieteorological table kept at Stratford, 79, 

 159,239,319,399,473. 



Meteorology, 76, 154, 186. 



Mexican proteus, 228. 



Mill, Mr. N. on the preparation of acetate 

 of soda, 113 — on the influence of the 

 moon on the animal and vegetable eco- 

 nomy, 218. 



Minerals, new, M. Levy on two, Her- 

 scheliteand Phillipsite, 361. 



• new American, 314. ' 



Mineralogy, 74, 232, 312, 330, .361, 383. 



Moon, the, on its influence on the animal 

 and v^efable economy, 218. 



Mount Carmel, petrifactions of, the Rev. 

 P. Fliskon, 312. 



Muscular contraciion developes electricity, 

 470. 



Observations, astronomical, 44, 113, 188, 

 256, 329, 435. 



Greenwich, 



390. 



chronometrical, Dr. Tiarks's, 



224. 

 Oil gas, 190. 

 Optical deception, 107. 

 Organic remains, 153, 225,229, 360. 

 Oxalate of ammonia, 140. 



Patents, new, 77, 156, 237, 318,' 398, 

 472. 



Pearls, artificial, IMr. Gray on the Chi- 

 nese manner of forming, 389. 



Pearson, Rev. W. on an altitude and azi- 

 muth circle, 70. 



Pentremite, 311. 



Petrifactions of Mount Carmel, the Rev. 

 P. Fliskon, 3 J 2. 



Philadelphia Academy of Sciences, ana- 

 lysis of their Journal, 306. 



PhUlips, R. his remarks on Dr. Christi- 

 son's memoir on the detection of arsenic, 

 298. 



Phillipsite, a new mineral, 361. 



Philosophical Transactions, analyses of, 

 62, 220, 452. 



Philosopliy, chemical, on its mathemati- 

 cal principles, 372. 



Photometer, Mr. Ritchie's, 463. 



Plagiostoma, on the genus, 153. 



Potash, pure, preparation of, 72. 



sulphate of, IMr. Brooke on Dr. 



Brewster's observations concerning its 

 crystalline forms, 330. 



Pridcaux, 3Ir. J. on the advantages of 

 high pressure steam, 432. 



Froteus; Mexican, 228. 



