INDEX. 15 



Iron very fufceptible of ruft, and brafs foon tarnifhes in the weflern coun- 

 try — and why, Vol. IV. p. 226 — a portion contained in air, 327 — of 

 its folution in the diluted I'ulphuric and muriatic acids, 457 — obfervati- 

 ons on finery cinder, or fcales of, 466. 



Italy, &c. why formerly colder than now. Vol. I. p. 276. 



J 



yaw-fall of infants, fpecies of tetanus. Vol. II. p. 230 — how to prevent 

 it, ib. 



jfeffirfon (Thomas) his letter in anfwer to the A. P. Society's, on being cho- 

 fen their prefident. Vol. IV. p. xii. — his letter on the height of certain 

 mountains in Virginia, ib. p. 222 — his memoir on the difcovery of cer- 

 tain bones of a quadruped of the clawed kind in the weliern parts of 

 Virginia, ib. p. 246 ; with a P. S. on the fkeleton of the Paraguay 

 megatherium, 259 — his defcription of a mould-board of the leall relilf- 

 ance, and of the eafieft and moft certain conftruftion ; taken from a 

 letter to Sir John St. Clair, prefident of the Board of Agriculture at 

 London, 313. 



yefferfonia I'mata, a new plant, Vol. III. p. 342. 



jferboa, account of an American, Vol. IV. p. 114. 



John/on (Dr. J his rule for pronunciation erroneous. Vol. III. p. 270. 



Jones (Dr.) and D. Rittenhouie's account of houfes ftruck with lightning, 

 Vol. Ill, p. 119. 



Journal oi a voyage from France to America by Dr. Franklin, Vol. II. p. 

 328. 



s ( thermometrlcal ) at fea. Vol. III. p. 90, 194. 



Jupiter, eclipfes of his fatellites obfei-ved at Norrlton, Vol. I. p. 21 — at 

 Philadelphia, 55. 



his dilfance from the fun. Vol. I. p. 62. 



— — (fatellites of) their immerfions and emerfions as obferved at Wilming- 

 ton on the Delaware, and at the weftern obfervatory, for determining 

 the weftern bounds of Pennfylvania in 1784, Vol. IV. p. 32 — at Bal- 

 timore in 1788, ib. p. 48. 



K 



Kamifchatla, fimilar to Labrador, but different from fame latitudes in 



Europe, Vol. I. pref. p. iv. 

 Kenhawa river, a curioufly fculptured rock tliere, Vol. IV. p. 252. 

 Kentucky, remarkable appearances at the Great-bone lick there. Vol. IV. p, 



517- 

 Ketchup (India) how to make, Vol. I. p. 259. 



King (Nicholas) his improvements in boats, &c. for river navigation, Vol. 

 IV. p. 298. 



I,aBura 

 4C 



