CONTENTS. 
\ 
Keeper of the Mufeum at Herculaneum, and 
F. K. S. to Tho. Hollis, EJq ; F. R. S. dated Por- 
tici, Feb. i. 1758. p.6151. 
LXXXV. A further Attempt to facilitate the Refo- 
lution of Ifoperimetrical Problems. By Mr.. Tho- 
mas Simpfon, F. R. S. p . 623. 
LXXXVI. ObJ'ervations on the Alga Marina latifo- 
lia ; The Sea Alga with broad Leaves. By John 
Andrew Peyftonel, M. D. F. R. S. Franflated 
from the French. p. 631:. 
LXXXV II. An Account of the diftilling Water frejh 
from Sea-Water by Wood-AJhes.. By Capt. William 
Chapman : In a Letter to John Fothergili, M. D. 
LXXXV III. Obfervatio Eclipfs Lunar is fall a Ma- 
triti a P a . Joanne Wendlingen, Societatis Jefu, in 
Regali Obfervatorio Collegii Imperialis ejufdem So- 
cietatis , 'Die 30 Julii 1757. p. 64a. 
Obfervatio Eclipfs Lunaris , fa A a ab eodem , 
eodem modo y eodem loco , iifdemque inftrumentis. 
Die 24 Januar. Anni 1758. p. 642. 
LXXXIX. Obfervations upon a flight Earthquake , 
tho' very particular , winch may lead to the Know - 
lege of the Caufe of great and. violent ones , that 
ravage whole Countries , and overturn Cities. By 
John Andrew Peyffonel, M.D. F.R.S. Franf- 
lated from the French. p. 645. 
XC. A Catalogue of the Fifty Plants from Chelfea 
Garden, prefented to the Royal Society by th$ 
worjhipful Company of Apothecaries, for the Tear 
1 757, purfiiant to the Direction of Sir Hans 
Sloane, Baronet , Med. Reg. & Soc. Reg. nuper 
PrceJ'es , by John Wilmer, M.D. clariff. Societatis 
2 Pharmacent , 
