r 636 ] 
fome mineral fubftances; and, in particular, tc fee how far the acids of fea-falt and 
of vitriol contribute to mineialize metallic and other fubflances, p. 605. See Mint- 
in'. Subjiances . 
F. 
Fair and frofly days in London in each half-month, and in the whole year, commencing 
March 1775, p. 358. 
Falkland IJlands, an account of, p, 99. Where fituated, ibid. Defcription of them, 
p. 99, 100. Vegetable productions there, p. 100, lor. 103, 106. A furprizing 
fpecies of vegetation, p. 105. What winds prevail there, p. 101. 107. Wind from 
E. to S. molt pernicious, blighting, and tempeltuous, p. ior, 102. An account of 
fifli and amphibious animals, p. 102, 103. The fox the only bealt there, p. 104. 
Account of birds, p. 104 — 107. Nature of the foil, p. 107. Difference of wea- 
ther, p. 107, 108. Coails abound with fpermaceti whales, p. 108. The illands with 
innumerable feals and fea- lions, ibid. 
FaJfo Bay to Tyger Berg, a large Tandy plain in the fouthern part of Africa, p. 269. 
Overgrown with an infinite variety of plants, ibid. 
Farr, Dr. Samuel, extradt of his meteorological journal for the year 1775, kept at 
Brilloi, p. 367. See Meteorological Journal. 
Females and males, their number in different places, p. i6r. Exceed the males, ibid. 
Fire and fmoke, purify a Blip much better than vinegar, p. 404. 406. 
Fires in the night-time, frighten away wolves and tigers, p. 288. 
Fijh, poifonous, an account of fome in the South Seas, p. 544. Bad effcCls of eating 
fome of them experienced in the crew of his majefty’s Blip the Refolution, 544. 946. 
Method of treating the diforder, p. 545. Some account of the fifli, p. 546. How 
the perfons were affe&ed, with the progrefs and continuance of the diforder, p. 546 
— 551. Dogs who had eaten of the fifli affeCled in a higher degree than the men, 
p. 551, 332. Two hogs who had eaten of the offals died, p. 352. 
Ftjhy tranfparent, an account of fome at Falkland Iflands, p. 102. Crimping of fifli, cut- 
ting them into pieces while alive, why praClifed, p. 415. ». 
Fits, afthmatic, violent ones occafioned by the efHuvia of ipecacoanha, p, 168. See 
JJlhmatic Fits . 
Flint, very fcarce in Siberia, p. 527. 
Flouers, remarkably fine ones in the fouthern part of Africa, 283. 302, 303. 
Fontana, Abbe, his method of mixing the nitrous with the common air, p. 257. 
Fordya , Dr. George, on the light produced by inflammation, p. 304. See Light. 
Foffils and petrified fea-produ&ions, very fcarce in Siberia, p. 527. 
F other gill. Dr. A. his obfervations made during the late frofl at Northampton, p. 987. 
See Frojl. 
Fethergill, Dr. John, his account of the magnetical machine contrived by the late Dr. 
Gowin Knight, p. 391. See Magnetical Machine. 
Franfcbe 
