INDEX. 31 



the generation of, 205 — their parts accurately defctibed, 211 — the cre- 

 ative power of plants, 346. 



Plant, a new one dlfcovered near Pliiladelphia, Vol. IV. p. 173. 



Plko-Pdonka of the Poles, a fymptom of leprofy, Vol. IV. p. 293. 



Plsugh. See M'luLUoard. 



Podophyllum diphyllum of Linnaeus, botanically defcribed, Vol. ITI. p. 334. 



Po'ijon of the rattle-fnake, how counterai5ted, Vol. III. p. iC2, 104, 109, 

 114. 



Poifonous pl.ant, an account of one in Virginia, Vol. III. p. 234. 



fole-Jhir and ^ Bootes, the right afcenfion and declination of, Vol. III. p. 

 116. 



Poles of the earth fuppofed change of pofition. Vol. III. p. 12. 



Polypi, opinion concerning their generation and reproduiStion, Vol. III. p. 

 204. 



Ponds, method of draining them in level grounds, Vol. III. p 325. 



Popular diet of the Americans, the caufe of various difeafes. Vol. HI. p. vi. 



Populatim (Indian) See In<iiun population. 



ot N. America, ob.ervations on its vaft increafe and importance. 



Vol. III. p. 25 — compared with that of other countries, 27, 134 — 

 doubled in 2.^ years, 42 — in 15 and 20 years, 43. 



Poppy (lukitej produce of it per acre. Vol. IV. p. 412. See Opium. 



Pia:nes, lome account of. Vol. III. p 219. 



Preachers (illiberal; the bane of real virtue. Vol. III. p. vii. 



Piemiums, for what fubjeds offered. Vol. IV. p v. — to whom adjudged, p. vii. 



Prefents to the A. P. Soc. Vol. II. p. 398 — Vol. III. p. 35 1 — Vol. IV. p. 

 xxvii. 



Prejerving of meats, butter and milk. Vol. II. p. 30, 31. 



of wine, Vol I. p. 183, 188, 190. 



— , of parihips, Vol. II. p. 199. 



Prefqu' ijle, remarkable phenomenon there, Vol. III. p. 62 — effeiH: of the 

 winds. Vol. IV. p. 225 — fubjcft to heavy dews and fogs, ib. — its at- 

 mofphcre moifter than in the middle Atlantic ftates, ib. — little limeftone 

 there, 226 — lat. of the town there determined, p. 231. 



Priejlley's (Dr.) electrical battery defcribed, Vol. II p. 93 — his and Bec- 

 caria's ideas of eleftricity, 76 — his experiments and observations relat- 

 ing to the analyfis of atmolpherical aii-. Vol. IV. p. i — his farther 

 experiments relating to the generation of air from water, ib p. 1 1 to 

 20 — his appendix to, and correiflion of the two preceding articles, 382, 



, his doftrine of phlogillon rejeded, 452. 



Prior (Tho.) his account of the contafts in the tranfit of Venus, Vol. I. p. 

 49. 



Piize Medal of Magellan, how and in what cafes to be awarded, Vol. II. 

 p. xix. See Mag lanic prize. 



Problem (optical) by Mr. Hopkinfon, Vol. II. p. 201 — folved by Mr. Rit- 

 teniiouie, 2C2. 



Procef. for making maple fugar, Vol. III. p. 67. 



Ealt India lugar, ib. p. 79. 



ProjeBion of tlie tranfit of Mercury in 1769, Vol. I. p. 88. 



Pronunciiilion^ L)r Joimlbn's rule for it erroneous, Vol. III. p. 270 — rules 

 for tlie pronunciation of a new propofed alphabet, 280. 



Pi ovidcnct 



