INDEX. 



651 



Languages, remarks upon the analysis 

 of; 57. 



Lassau's, M. de, description of a mode 

 of erecting light vaults over churches 

 and similar spaces, 224. 



Laurel oil, apparent hydrostatic ano- 

 maly with, 161. 



Lead, action of mercury upon, 3. 



resistance of, to pressure, 157. 



Leaves, M. Brongniart on the structure 



and functions of, 421, 636. 



Leroux's, M., memoir on salicine, and 

 its powers as a febrifuge, 177. 



Letters, remarks upon, by Professor 

 Kenwick, 466. 



Liebeg, M., on the preparation and com- 

 position of malic acid, 178. 



on magnesium, 411. 



on the composition of cam- 

 phor and camphoric acid, 631. 



Light-houses, on the illumination of, by 

 Lieutenant Drummond, 344. 



Light, emission of, during the com- 

 pression of gases, 381. 



of the glow-worm, remarks upon 



the, 20. 



Limits of vaporization, 70. 



Linear measure, error in standards of, 



343. 

 Linley's, Mr., account of a remarkable 



instance of anomalous structure in 



the trunk of an exogenous tree, 



476. 



remarks upon the theories of 



the formation of wood, 477 nature 

 of plants explained, 479. 



Lippershey, Hans, the original inventor 

 of the telescope, 324. 1 



Lithia, mode of preparing, 386. 



Lithotricity, remarks on, by Dr. Civiale, 

 564. 



Loewig, M., on the preparation of bro- 

 mide of carbon, 171. 



Lubbock's, Mr., researches in physical 

 astronomy, 342. 



Luetke's, Captain, pendulum observa- 

 tions, 602. 



Luminous figures produced by rapid 

 alternations of light and shade, 102 

 by pressure on the eye-ball, 1 04 by 

 galvanism, 107 rings occasioned by 

 lateral pressure, 115. 



Lungs, insufflation of the, in cases of 

 drowning, 190. 



Lyall's, Mr., remarks upon the weather 

 at Madagascar, 47 r j<mrnal, 50, 51 

 general observations', T>6, 



M. 



MADAGASCAR, remarks upon the weather 

 at, 47. 



Magnesium, M. Liebeg on, 411. 



mode of obtaining, 562. 



Magnetic needles, mode of preparing 



for electro-magnetic experiments, 31. 

 curve, geometric properties of 



the, 3 1 1 description of an instrument 



for describing it, 315. 



needle, dip of the, at St. 



Petersburgh, 604. 

 force, intensity of the, at St. 



Petersburgh, 604. 



equator, figure of the, 607. 



Magnetism, on the permanence of, in 



steel bars, 243. 



power of bodies to inter- 

 intensity of the earth's, 



cept, 549. 



610. 



Majendie and Desmoulin's observations 

 on the disappearance of luminous ob- 

 jects, 535, 537. 



Magnus's, M., mode of preparing sele- 

 nium, 619. 



Malic acid, preparation and composition 

 of, 178. 



Manganese, method of ascertaining the 

 value of the ores of, 293. 



Marsh, Mr., on the mode of perforating 

 glass, 633. 



Marx, Professor, on the expansion of 

 bismuth upon congelation, 411. 



Maunoir's, M., account of the surgical 

 recovery of an eye, 191. 



Matteucci's, M., experiments on living 

 animal substances, 186. 



on the origiu of the ac- 



tion in the voltaic pile, 612. 



Maturation of fruit, 559. 



Mental spectra, 114. 



Mercury, action of, upon different me- 

 tals, 1. 



Metallic specula, quantity of light re- 

 flected by, 162. 



rods, power of, to decompose 



water after the connexion with the 

 pile is broken, 167. 



Meteor and aerolite in Georgia, 415. 



Meteoric stones, remarks upon a theory 

 of the formation of, by Mr. Faraday, 

 72. 



Meteorological results, 641. 



Metre and English yard, proportion be- 

 tween the, 599. 



Mica, use of, in minute chemical analy- 

 sis, 633. 



Microscope, first invention of the, 484. 



Milk and caseum, memoir upon, 181. 



Mineralogy, Professor Whewell's re- 

 marks upon the necessity of the em- 

 ployment of notation in, 437. 



Mirage of Central India, 201. 



