[ 6*6 ] 
Llangwytiewar Hill , its longitude weft of Greenwich determined, p. 590. Its latitude 
determined, ib. 
Llanmace Church , its longitude weft of Greenwich determined, p. 390. Its latitude 
determined, ib. 
Llantivit Church , its longitude weft of Greenwich determined, p. 390. Its latitude 
determined, ib. 
London . A number of fecondary triangles, fubdivided into two fets, for the improve- 
ment of the maps of the country, and the piau of the city ot London and its environs, 
p. 247. 
Longitudes and latitudes of fome remarkable places near the Severn determined, p. 385. 
Luna cornea, not decompounded by martial vitriol, p. 384. May be decompounded by 
the elements of martial vitriol while they are in the ad ot diflblution, ib. 
Lunar motions, the Hindoos remarkably corred in their calculations ot, p. 561. Lunar 
conftellations enumerated in Hindoftanee, p. 579. n. 
Lydd, its latitude, longitude, &c. p. 2 32* 
M. 
Mars . Obfervations on the heliocentric longitude and motion of the nodes of Mars, 
p. 29. See Taeles. 
Mar/den , William, on the chronology of the Hindoos, p. 360. 
Mafulipaiam , much Tabafheer conveyed to Hydrabad from, p. 279. 
Mercury , a mixture of vitriolic and nitrous acids in a concentrated ftate ads upon, and 
principally calcines, p. 373. Mercury precipitated in its metallic ftate from its folu- 
tion in nitrous acid by a folution of martial vitriol, p. 383. Vitriol of mercury may 
be decompounded by a folution of martial vitriol, and the mercurial precipitate forms 
globules, when dried and warmed, p. 384. 
Minebead, its longitude weft of Greenwich determined, p. 390. Its latitude deter- 
mined, ib. 
Mineral . Analytical experiments on a mineral fubftance from Sydney Cove in New 
South Wales, p. 307 • Suppofed to belong to the earthy rather than the metallic clafs, 
p. 316. Suppofed to be a pure fpecies of plumbago or black-lead, p. 319. 
Metals. On the eifedts of compounding the vitriolic and nitrous acids, under various 
circumftances, upon the diftolution of metals, p. 360. 
Mills , Abraham, on the ftrata and volcanic appearances in the North of Ireland and 
Weftern Iflands of Scotland, p. 73. 
Molybdeena , Howly decompofed by the diluted nitrous acid, p. 318. Rapidly aded upon 
by concentrated nitrous acid, ib. 
Montlamhert , near Boulogne, its latitude, longitude, &c. p. 23 2. 
Motion , obfervations on fpherica), p. 496. 
Mangel Upoo (fait of bamboo), p. 273. See Tabafeecr* 
Mufcul&r 
