INDEX. 



549 



Lead: occurrence of sulphate of, in Lead 

 Hills, 402 ; carbonate of, 402 ; cupreo- 

 sulphate of, 402 ; sulphate-carbonate 

 of, 403 ; sulphato-tricarbonate of, 403 ; 

 phosphate of, 403 ; cupreo-sulphato- 

 carbonate of, 404 ; chromo-phosphate 

 of, 405 ; vanadiate of, 405. 



Liebig (Prof.), letter to, on the theory of 

 substitutions, 75. 



Light, on increasing the, of a common 

 Argand lamp, 40 ; theoretical explana- 

 tion of an apparently new polarity in, 

 381. 



Lime, hydriodate of, on the use of, as a 

 photographic agent, 208. 



Litmus, on the chemical history of, and of 

 archil, 299. 



London clay, description of the fossil re- 



. mains of a mammal, a bird, and a ser- 

 pent, from the, 149. 



Lubbock (J. W.) on the heat of vapours 

 and on astronomical refractions, 273, 

 467, 488 ; on the variation of the semi- 

 axis major of the moon's orbit, 338. 



Liineburg, results of analysis of boracite 

 from, 104. 



Maclear (Thomas), further particulars of 

 the fall of the cold Bokkeveld meteorite, 

 142. 



Magnesia, carbonate of, on the aqueous 

 solution of, with excess of carbonic 

 acid, 346. 



Magnetic observatory at Prague, deduc- 

 tions from the first year's observations 

 at the, 418. 



Magnetic disturbances, table of, 427. 



Magnetism, terrestrial, contributions to, 

 144. 



Magneto-electric induction, 281, 356. 



Mammiferous animals, on the blood cor- 

 puscles, or red particles of the, 139 ; on 

 certain peculiarities of form in the, 325. 



Manchester and Bolton railway, fossil 

 trees, found on the, 541. 



Manganese, hydriodate of, on the use of 

 as a photographic agent, 208. 



Maps, geological : of Cornwall and De- 

 von, 394 ; of England, 395 ; of Ireland, 

 395 ; of a large portion of Europe, 396. 



Marchand (R. F.) on the formation of 

 larnpic acid, 76; on the presence of 

 iodine in cod oil, 78. 



M'Cord (Mr.), observations on the solar 

 and terrestrial radiation made at Mon- 

 treal, 78. 



Mean level of the sea, on the, 321. 



Medium, resisting, on the motion of a 

 small sphere vibrating in a, 462 ; on 

 Prof. Challis's investigation of, 481. 



Metallic oxides, hydromellonic acid and, 

 238. 



Meteorite, cold Bokkeveld, on the fall of 

 the, 142. 



Meteorological observations, monthly, 79, 

 80; 159, 160; 239, 240; 319, 320; 

 399, 400; 479, 480. 



Meyen (Dr. 'F. J. F.) on the progress of 

 Vegetable Physiology, reviewed, 65. 



Miller (Prof.) on the form and optical 

 constants of nitre, 38 ; mineralogical 

 notices communicated by, 102, 202; 

 analysis of monazite, 202 ; analyses of 

 octahedral copper pyrites, 202 ; on the 

 form of rutile, 268. 



Mineralogy : plumbiferous arragonite, 

 102; petalite and spodumene, 103; 

 poonalite and thulite, 103; boracite 

 from Liineburg, 104; nosean, hauyne, 

 lazulite and artificial ultramarine, 104 ; 

 gmelinite from Glenarm, 105; elaeolith 

 and nepheline, 105; on Mr. Weaver's 

 paper relative to the mineral structure 

 of the south of Ireland, 161 ; mineralogi- 

 cal notices, 202; monazite, 202; octahe- 

 dral copper pyrites, 202 ; Mr. Scheerer 

 and Mr. Francis on some combinations 

 of arsenic with cobalt, 331 ; Mr. Francis 

 on crystallized nickel ore, 335 ; on the 

 constitution of pigotite, 382 ; mining 

 records' office, 387 ; on the minerals 

 found in the neighbourhood of Glasgow, 

 401 ; stellite, 407 ; Thomsonite, 407 ; 

 nasolite, 408 ; mesolite, scolezite, 409 ; 

 Glottalite, Laumonite, 410; chabazite, 

 411; analcime, cluthalite, 413; Stil- 

 bite and Heulandite, harmotome, 414 ; 

 Philipsite and morvenite, 415 ; Wollas- 

 tonite, 415; Prasolite, Labradorite, 416; 

 sulphuret of Cadmium, 417 ; Greenoc- 

 kite, 418 ; pyrrhite, 478 ; pihlite, dy- 

 sodil, 479. 



Mitchell (Di. James) on the foul air in 

 the chalk and strata above the chalk 

 near London, 66. 



Monavoullagh conglomerate, 168. 



Monazite, analysis of, 202. 



Montreal, on the solar and terrestrial ra- 

 diation made at, 78. 



Moon's orbit, on the variation of the semi- 

 axis major of the, 338. 



Mudesous and mudesic acids, 382. 



Murchison (R. I.) and Major Sabine, ge- 

 neral secretaries of the British Associa- 

 tion, address of the, at Glasgow, 441,482. 



Muriate and nitrate of copper, on the use 

 of, as photographic agents, 204. 



Muriated solutions, on the use of, as pho- 

 tographic agents, 206. 



Muscles, voluntary, on the minute struc- 

 ture and movements of, 386. 



Museums : of ceconomic geology, 308 ; 

 local, 392 ; British, 393. 



