CONTENTS. 
XXXI. Objervations on the Eclipfe of the Sun at 
Chatham, April i, 1764, by Mr. Mungo Murray : 
Communicated to Jofeph Salvadore, EJq ; F. R. S. 
in a Letter from Dr. John Bevis. p. 17 1. 
XXXII. Objervations and Experi?ne?its on different 
ExtraBs of Hemlock : By Michael Morris, M. D. 
F. R. S. p. 172. 
XXXIII. Efay on the life of the Ganglions of the 
Nerves : By James Johnfton, M. D. Communi- 
cated by the Right Rev. Charles Lord Biflsop of 
Carlifle, andF.R.S. p. 177. 
XXXIV. An Account of fever al fiery Meteors feen in 
North America : In a Letter to John Pringle, 
M. D . and F. R. S. fi-om John Winthorp, Efq-, 
Hollilian Profefior of Mathematics and Philofophy 
at Cambridge, in New England. p. 185. 
XXXV. Some New Properties in Conic ScBions , 
difcovered by Edward Waring, M. A. Lucafian 
Profefior of the Mathematicks in the JJ? 7 iverfity of 
Cambridge, and F. R. S. to Charles Morton, M. D. 
Sec. R. S. p. 193. 
XXXVI. An Account of the Efi'eBs of Lightening at 
South Weald, in Effex : By W. Heberden, M. D. 
and F. R. S. p. 198. 
XL. Obfervations upon the Efi'eBs of Lightning , with 
an Account of the Apparatus propofed to prevent its 
Mifchiefs to Buildings , more particularly to Powder 
Magazines ; being Anfwers to certain Quejlions pro- 
pofed by M. Calandrini, of Geneva, to William 
Watfon, M. D. F. R. S. p. 201. 
XLI. An Account of the Efi'eBs of Lightning in St. 
Bride’s Church, Fleet-ftreet, on the i%th of June 
1764: In a Letter to Mr. Benjamin Wilfon, 
b F.R.S. 
