_Labour_ necessary to health, 217. --Pernicious if in excess, _ibid._ --What diseases it tends to avert, 219. --Scurvy prevented by it, 344. _Land wind_ at Jamaica, 119. --Not at the small islands, _ibid._ _Lemon juice_, extraordinary instance of its efficacy in scurvy, 86. --The most effectual remedy in scurvy, 303. _Lemons and limes_, their juice the best detergent in scorbutic ulcers, 502, _& seq._ _Lientery_, a symptom in obstinate fluxes, 489. _Limes_, instance of their great antiscorbutic effect, 56. _Liver_, inflammation of it seldom known in the West Indies, 95. --But appeared at New York in men belonging to the West-India fleet, 156. M. _Magnesia_, given with acids, removes sickness of the stomach, 452. _Malt liquor_, the utility of it, 320. _Malt, essence of_, a weak antiscorbutic, 57, 504. --Of service in the beginning of scurvy, 146, 164. _Manners, Lord Robert_, his death lamented, 520. _Marshes_, their exhalations cause fevers, 43. _Melasses_, method of using it, 305. --Great utility of it, 308. _Mixing of men_, bad consequences of, 252, _& seq._ _Moisture_, the bad effects of it, 288. _Mortality_, method of calculating the proportion of it, 88. --Greater at sea from the want of an hospital and of proper diet, 143. --In the fleets and hospital at different periods, 205. --In the army in the West Indies, 206. --In England, 207. --Total in the fleet for three years and three months, 209. _Mortification_, an uncommon instance of it in the shoulder, 83. N. _Necessaries_, Surgeons, their quantity very inadequate, 302. _New York_, the fleet therein 1780, 38. --in 1782, 150. _Nyctalopia_, a symptom of the scurvy, 24, 501. _Nymph_ frigate, account of her health, 164. O. _Oatmeal_, the abuse of it, 308. _Observations_, the difficulty of making them, 9. _Officers_, more affected by foul air than common men, 116, 137. _Opium_, advantage of combining with antimonials, 392. --With neutral salts, 395. --Its use in continued fevers, 404, 408. --Cautions and directions with regard to it in fluxes, 476, 479. --Its use in ulcers, 504. --The best method of giving it in the locked jaw, 532, _& seq._ _Osbridge_, Lieut, his ingenious contrivance for sweetening water, 331. P. _Pediluvia_ hurtful in inflammatory fevers, 397. _Petechiæ_, a symptom in the ship fever, 377. _Phthisis pulmonalis_, not so common in the West Indies as Europe, 97. --but more rapid, _ibid._ _Phœnix_, Spanish Admiral’s ship, her excellent materials and construction, 53. _Pigeon Island_, remarkable proof of its healthiness, 228, _& seq._ _Plague_, its infection does not spread far, 298. --Means of preventing it from spreading, _ibid._ and 299. --Never known in tropical climates, 277, _& seq._ _Porter_, its effect in preventing scurvy, 320.