INDEX. 
Peterfburg , account of artificial cold produced there by Dr. 
Himfei — — — 670 
Peyffonel { John Andrew) his obfervations on the Sea Scolo- 
pendre, or Sea Millepes — — — 35 
Phenomena of earthquakes , obfervations thereon — 56 6 
Pieces of marble Jtained , experiments on feveral — 30 
Plant ;, catalogue of fifty from Chelfea garden, for the year 
1758 — — — 96' 
, D p for the year 1759 644 
, the Halefia and Gardenia, account of them 929 
Poligne (mountain of) in Bretagne, Terra Tripolitana, or 
Tripoli, found in it — — 187 
, formerly a volcano 188 
Power of water and wind to turn mills and other machines 
depending on a circular motion — — 100 
Powers , of two diftinft ones in eleCtricity — 371, 380 
Prefervation of feeds , account of fome experiments relating 
thereto — — — — 2 °b 
Pringle {John) M. D. feveral accounts of the fiery meteor 
which appeared on Sunday the 26th of November, 1758, 
collected by him — — — 218 — 259 
, his remarks upon the preceding ac- 
counts — ■ — — — 2 59 
Production of the Terra Tripolitana, or Tripoli, account 
of fome obfervations relating thereto 186 
Propofal for difcovcring the annual parallax of Sirius 889 
Pidlein (Rev. Samuel) M. A. on a new-invented filk-reel 
2 r 
his account of a particular 
fpecies of cocoon, or filk-pod, from America 54 
R 
Raper {Matthew) Efq; his enquiry into the meafure of the 
Roman foot — — 774 
Remarks on Mr. Hubner’s obfervations relating to the pro- 
duction of the Terra Tripolitana, or Tripoli 191 
— n. — upon feveral accounts of a fiery meteor which ap- 
peared 
