INDEX. 



Lelievre, 105 



ijtnkSf aberrations of light paiUng thro*, 



159 



Lewis, Dr. 2S3 



Light, experiments on procuring from 

 combuftible gafes, 65 — On the aberra- 

 tions of when pafling through lenfcs, 



159 

 Log for fhowing the courfe of a balloon, 53 

 Lower, 83 

 Lowitz, 52 



Ludlam, Mr. his wooden rod pendulum, Z 

 Luminous meteor, account of one, aSi 



M. 



Machlachlan, J. Efq. on the mines and 



manufadlorics of the Eaft Indies, &c, 



294 — 298 

 Magnet, different kinds of native, 15 

 Magnetic needle, its dip lefs at great heights 



in the air, 54 

 Magnetifm of fulphuret of iron, 6 — Of 



carburet and phofphuret of iron, 9 

 Mairan^ 132 



Manganefe, adion of phofphorus on fo- 

 - lution of, 141 

 Manufadlories, difclofure of their pro- 



cefles a general advantage, 105 

 Maps, improvement in, 203 

 Maraldi, 277 

 Marcchaux, an extremely fenfible micro- 



eledlrometer by, 136—138 

 Marfden, 33, 37 

 Maflfy, Mr. his pendulum for regulating 



the ftriking part of clocks not new, 4 

 Mechanics, trcatife on, announced, 144 

 Menzies, Dr, 81 

 Mercury, fee Quickfilver 

 Metals, experiments on the electricity of, 



56, no 

 ■ , action of phofphorus on folutions 



of, 138 

 Micro eleilrometer, an extremely fenfible, 



136 

 Mill for levigating colours, improved, 119 



— Phjlofophical, izi, note. — For dry-^ 



grinding, 124 — Mechanical apparatus 

 for meafuring the reaftion in, 149 



Mineralogical and phy fical tour in the Car- 

 pathian mountains, 60 



Molard, 86, 92 



More, S. Efq. his experiments on the re- 

 aftion againft horfes, 97, 146, note^- 

 His eftimate of horfe powers, 98 



Mucus, experiments and obfervatlons on, 

 251 — Refembles vegetable gum, 254 



Murdock, Mr. his procefs for illuminating 

 by gas fiom coal, 65, 73 



Muriate of barytes, mode of preparing, 

 133> 161 



lead, cryftallized, 135 



tin, recent, the moft delicate teft 



of mercury, 179 



Murray, Mr. M. his defcrlption of a port- 

 able fteam-engine, 93 



Dr. 75 



Mufcles, ftrufture and qualities of, 190 



Mufcuiar motion, Croonian leilure on, 

 189 — 201, 255 — 264 



Mulhet» Mr. Dav. 16 — His experiments 

 on wootz, 221—224, 284—290 



Muffin Pufhkin, Count, 177, i^S 



N. 



Nerves of voluntary and involuntary mo- 

 tion, 194 — Definite in their termina- 

 tion, 195 — Their power conftaatly ac- 

 tive, 264 



Newton, SirL 159, 166 



o. 



Old Correfpondent, Mr. Bofwell's anfwer 

 to, 21 — His reply to Mr. Bofwell, ii» 



Oxide of carbon, gafiform, apparatus for 

 fnaking, 116 



Palladium, unfuccefsful -attempts to form, 

 61, 163 — Experimeirts en the formation 

 of, 162 — 182 — For fale ai MelTrs. 

 Knights, 304 



Parker, Mr.T. N. 27 



Feilcticrj 



** 



