326, 3^7 — his journal of a voyage from France to America, 328 — of- 

 fers a new conftrudion for boats, 3C9 — on tlic formation of the earth. 

 Vol. III. p. I — his new theory of light and heat, 5 — his communication 

 of the Chinefe manner of making certain paper, 8 — on magnetifm and 

 the theory of the earth, 10 — defcribes a curious phenomenon, 14. 



Freejhtie (excellent) on L. Erie, Vol. IV. p. 226. 



Fro^s, falling with rain, accounted for, Vol. II. p. 117 — experiments with 

 opium upon, Vol. IV. p. 398. 



Frojl and fnow lefs in America than formerly. Vol. I. p. 275 — its frequency 

 in Pennfylvania, Vol. III. p. 52 — its aftion applied to making maple 

 fugar, 69. 



FruBificLition of plants, organs of. Vol. III. p. 209. See Plants. 



Fruits and pulfe, their nature changed by tranfplantation, Vol. I. p. 224. 



Fue/, advantages of, when plentiful and cheap. Vol. II. p. 26 — means of 

 faving it, 29, 33, 34, 35, 36, 67. 



Furnaces, a machine to regulate the heat of, Vol. I. p. 286. 



Gas (azotic) 1 



•^— (carbonic acid) | Experiments and obferva- 



(nitrous) |> tions on. Vol. IV. p. 1, 



(hydrogen) | 17, 417,10428. 



(ammoniacal) J 



Gajjfendus firll difcovers Mercury on the fun's difc, Vol. I. appendix p. 53. 



Georgia, its climate. Vol. III. p. 49 — proportion of deaths at Savannah, 59. 



Genriany, proportion of deaths in. Vol. III. p. 41. 59. 



Gllptn (John) on the annual pafTage of herrings. Vol. II. p. 236. 



Glajffs, (fmoked) beft to defend the light. Vol. I. p. 106. 



Gcats yielding fleeces of fine wool. Vol. IV. p. 151. 



Godfrey's quadrant, an improvement of. Vol. I. appendix p. 21. 



Golden caffia defcribed. Vol. III. p. 228. 



Granite (crylfallized) found on the Conewago hills (Pennf.) Vol. IV. p. 445. 



Grapes (wild) abundant in N. America, pre/, ix — their culture recommend- 

 ed, ib. — different kinds defcribed, 192 — anecdote of a Roman cultiva- 

 tor of. Vol. I. p. 121 — how to obtain the beft wine from, 125 — the 

 kinds fuitable to N. America, 126 — American forts defcribed, 191 — 

 how to gather and make wine of them, 171 — white do. 172 — red do. 

 175 — how to make railins, 193 — curious inftances of the efFcc'ls of 

 tranfplanting them, 222. See Vines. 



Crasjlioppers, artfully made ufe of by the nine-killer, as a bait to entrap fmall 

 birds as prey, Vol. IV. p. 124. 



Craves ( Indian) accounts of. Vol. IV. p. 179, 181, 203, 205'. 



Great-Britain, obfervations thereon the tranfit of Venus, Vol. I. p. 105, 114. 



Great-bone-licL in Kentucky, remarkable appearances at. Vol. IV. p. 517. 



Great clwj.; or megalonyx. See Bones. 



Greenwich ohfervatory (G. B) obfervations there on tlie tranfu of Venus in 

 1769, Vol. I. p. 105. 



Greenway 



