t «37 ] 
P ranfcbe flock, In the fouthern part of Africa, an account of it, p. 271. 
Freezing. An experiment of parting frefli-water from falt-water by freezing, p 373, 
374. Remarks thereon, p. 374. 
Progs, abundance of them in the hot feafon on the dry parched rock from St. Philip’s t# 
Mahon, in the ifland of Minorca, p. 442. How bred, ibid. 
Frojl, obfervations made at Northampton, during the late, p. 587. Froft fudden and 
leveie, ibid. I.emon-juice, vinegar, and red-port wine, expofed to the air in a cup, 
reduced to a folid cake of ice, p. 589. Spirit of Minder erus, volatile fpirit of fal am- 
moniac of both kinds, dulcified fpirit of nitre, red-port wine, and French brandy be- 
ing placed in the air were all perfectly congealed, ibid. Crude [quickfilver in a fri- 
gorific mixture of the vitriolic acid with fnow frozen, ibid. Experiment with the 
thermometer, to fee the cffedl of a high degree of artificial cold added to the natural* 
p. 590. 
F>oJI, great, in January 1776, with the ftate of the thermometer and wind during it, 
P- 3 S&, 359 ' 
Frojly and fair days in London in each half-month, and in the whole year, commencing 
March 1775, P- 3 5 8. Frofty days in Briftol in the year 1775, p. 368. 
G. 
Galen, fuppofed a vital fire kept up in the heart, p. 228. 
Gallic Romance, great affinity between it and the Romanfh of the Grifons, p. 145 — 
150. 
Game, plentiful in fome places of the fouthern part of Africa, p. 306. 317. 
GeeJ'e, in Falkland Ifiands, an account of them, p. 104. 
Gla/s, fridtion of glafs againft glafs, previoufly warmed, will make it eledlrical, p. 51^; 
Glafs retains its elediricity many hours, p. 515, &c. On the cryflallizations ob- 
ferved on glafs, p. 530. See Cry Jl alligations. Glafs gets an opaque whitenefs from 
arfenic, p. 536. 
Gl&nic, Mr. James, his propofitions feledted from a paper on the divifion of right lines, 
furfaces, and folids, p. 73. See Proportions. Problems. Theorems. 
Gold, native, found in a cryftallized form, p. 530, 8. n. Gold may be cryftallized by 
art, ibid. Gold lighter when hot than cold, p. 576. 
Gorgonia , on the nature of the, that it is a marine animal, and net of a mixed nature 
between animal and vegetable, p. 1. Known in Englifh by the name of fea-fana, 
fea-feathers, and fea-whips, ibid. Linnaeus and Pallas feem to make their growth 
between animals and vegetables, p. x. 3. True animals, and in no part vegetable, 
p. 2. Of the polype kind, ibid. How the nature of the polype and Gorgonia dif- 
fer in its formation, 2, 3. Obfervations on the nature and growth of the Gorgonia, 
P- 3 — 1 7 - 
Granite (lone, an enormous one called Witte Klip near the Cape of Good Hope, p. 278. 
4 O 2 Greets t 
