INDEX. 
Perfians , their invafion of Cyprus, p. 426. 
Pejtilence. See Plague. 
Petechia purple, how removed, p. 18. 
Phcenicia, See Alphabet Phcenician. 
Philadelphia , the apparatus there ufed to prefer ve sedifices 
from lightning, p. 203. How improvable, 204. Where 
the apparatus ought to end, 205. 209. 220. 
Pingre Monfieur, a lupplement to his memoir on the funs 
parallax, p. 152. Why his obfervations fent from 
Lifbon differ from thofe in his memoir, 159. 
Pitch , its ufe in preferving mummies, p. n. Experi- 
ments and obfervations upon it, p. 13. 
Plague , a letter about it from Mr. M’Kenzie, M. D. p. 69. 
How gradually it proceeds, 70. How often it may 
attack the fame perfon, 72. Why fo frequent in the 
Levant, 73. I he uiual procefs of this diftemper, 74. 
How it fir ft fhows itfelf, 75. When it ufually ceafes, 77. 
How cured, 78. Prefervatives againft it, 80. A hiftory 
of Plagues from 1748, to 1761, 82. 
Plants , a catalogue of the fifty prefented to the Royal So- 
ciety, by the Company of Apothecaries, A. D. 1763, 
P- 1 37 * 
Plat , Jofhua, his account of the Belemnite, p. 38. 
Polygones , fome new properties of them difeovered, p. 
194. 
Pot , Mr. F. R. S. his account of a hernia found in the 
urinal bladder, p. 6r — -Of the (tone found there, 63. 
Powder magazines, how preferved from the efleds of 
lightning, p. 205. 
Price Richard, his letter concerning the do&rine of chances, 
p. 296. 
Probabilities , of unknown events. See Events Unknown. 
Pyramids , royal in Egypt. A defeription of a mummy 
taken out of them, and infpedted at London, p. 3. 
R. Rain, 
