_Frigates_ more healthy than ships of the line, causes of this, 54, _& seq._ --More healthy when their fire place was between decks, 287. --A contrivance for ventilating them, 292. _Fumigation_, method of performing it, 270, _& seq._ G. _Gibraltar_ relieved by Lord Rodney, 19. --Admissions and deaths at the hospital there, 187, 205. _Gibraltar_ man of war, account of her, 53. _Grosislet Bay_, description of it, 28. _Gunpowder_, accidents from it, 190, 539, _& seq._ _Guthrie, Dr._, his observations on infection in Russia, 279. H. _Habit_, effect of it in resisting infection, 294. _Hæmorrhages, internal_, oil and tincture of rhubarb of eminent service in them, 486, _& seq._ _Hæmorrhage_, a limb sometimes carried off without any ensuing, 542. _Hæmorrhoids_, medicines adapted to them, 555. _Hardship_ impairs health and shortens life, 218. _Heat_ communicated to the hand, a symptom of the ship fever, 378, _& seq._ _Hemisphere, Northern_, a cold summer general all over it, 157. _Herodotus_, his account of the clothing and health of the ancient Ægyptians, 284. _Hospitals_ not so proper for the sick as their own ships, 60. --Account of diseases sent to them, 185. --At Gibraltar, 187. --At Barbadoes, 189, 197. --At St. Christopher’s, 195. --At St Lucia, _ibid._ --At Jamaica, 198. --At New York, 201, _& seq._ --General view of them all, 205. --Proportion of deaths in them no criterion of the success of practice, 195, 200. _Hurricane months_, 28. _Hurricane_, a violent one in the West Indies--its good effect on the health of the inhabitants, 40, _& seq._ _Hypochondriac_ complaints do not affect the laborious part of mankind, 219. I. _Jaw, locked_, account of those affected by it in the battles of April, 1782, 520, _& seq._ --Its symptoms different from those of the tetanus, 526. --Wherefore most frequent in hot climates, 529, _& seq._ _Indolence_ a cause of scurvy, 345. _Infection_, the obscurity of and difficulty of investigating it, 238. --Various ways in which it is introduced into a ship, 241. --It may arise without the presence of fever, 242. --Habit renders people insensible to it, _ibid. & seq._ --It never affects all indiscriminately who are exposed to it, 245. --It does not pass from one species of animal to another, 249. --How to prevent the production of it, 254. --Means of eradicating it, 264. --Method of guarding against it, 293. --Less frequent in hot climates than cold, 276. _Inflammatory_ complaints most frequent in ships where no infection, 172. _Inoculation_, conjecture concerning the cause of its safety, 247. _Intermittent fevers_ sometimes arise on board of a ship, 32. --Some unusual remedies for them, 456, & _seq.q._ _Intestines_, great, the principal seat of the dysentery, 470. L.