444 INDEX. 



Mercury, observations on the preparations of, in the French 

 Pharmacopoeia, 245-247. 



Metals, on the cupellation of, 183. 



Meteorological Diary, for December, 1819, and for January 

 and February 1820, 219— for March, April, and May, 431. 



Meteorological Journal, in India, 203 — in England, for the year 

 1819, 209— one shewing the pressure of the aqueous atmo- 

 sphere three times in the day, 135-137—269-278. 



Miamo, (Capuchin Mission of,) present state of, 5 — Sunday 

 service of the negroes there, 6. 



Missions, (Capuchin) of the Caroni, journal of an excursion to, 

 1—32. 



Missouri, nitre, caves of, 194. 



Monte Rosa, height of, 196, 417. 



Morosi, (M.) Experiments on the force of a jet of water, 171- 

 173. 



Muriatic acid, refractive powers of, 181. 



Murucuri, (Capuchin Mission of) notice of, 30. 



Musical instrtnnent, new, notice of, 174. 



N. 



Naphtha, (Native,) properties of, 408. 



Natural History, miscellaneous intelligence concerning, 193- 



210, 411-426. 

 Nautical Almanack {oi l^ll — errors in, noticed, 380. 

 Nerves, observations on the theory which ascribes sensation to 



the agency of, 106-124. 

 Nervous Influence and galvanism, proved to be identical, 261-262. 

 Nitrate of silver, economical mode of preparing, 405. 

 Nitre of plants, observations on, 422. 

 North, notice of a new voyage of discovery to the, 430. 

 Norton's ordinall of alchimy, extract from, 236. 



o. 



Observatory, new astronomical,' at the Cape of Good Hope, 



391. 

 Ohio, (River,) description of the cat-fishes found in, 48-52. 

 Olbers, (Dr.) on the easiest and most convenient method of 



calculating the orbit of a comet from observations, 149-162 — 



on the comet of 1819, 163, 164 — on the elliptic elements of 



Pons's comet of 1819, 382. 

 Olive Oil, test for, 185. 

 Opium, observations on the preparations of, in the French 



Pharmacopoeia, 241, 242. 

 Opium, (British) on the manufacture of, 69 — poppies, how to 



be cultivated, 70 — and their juice to be collected, 71 — 



