CONTENTS 
T O 
V O L. LVIII. 
I. A N Account of the Eruption of Mount Vefuvius, 
in 1 767 : In a Letter to the Earl of Morton, 
Prefident of the Royal Society , from the Honourable 
William Hamilton, His Majefy s Envoy Extraordi- 
nary at Naples. p. 1. 
II. Ex traSi of a Letter, dated Vienna, April 4, 1 767, 
from Father Jofeph Liefganig, jfefuit, to Dr. Bevis, 
F. R. S. containing a fort Account of the Mcafure- 
rnent of three Degrees of Latitude wider the Meridian 
of Vienna. p. 15." 
III. An E/fay on the Force of Per cuff on , by William 
Richard Ion, M. D. Communicated by William 
Heberden, M. D. F. R. S. p. 17, 
IV. An Efay on the Connexion between the Parallaxes 
of the Sun and Moon ; their Denjities ; and their 
difturbing Forces on the Ocean : By Patrick Murdoch, 
M. D. F. R. S. " p. 24. 
