CONTENTS. 
LL. D. Canon Rejidentiary of St. Paul’s, and 
Chancellor of the Diocefe of Lincoln. p. 133. 
XXIX. A Method of lejfening the Quantity of Friction 
in Engines , by Keane Fitzgerald, EJq ; F. R. S. 
P‘ * 39 - 
XXIX. The Difference of Longitude between the Royal 
Obfervaiories of Greenwich and Paris, determined 
by the Obfrvations of the Tranfts of Mercury over 
the Sun in the Fears 1723, 1736, 1743, and 
1753 : By James Short, M. A . F. R , S. 
P- i 8 5 - 
XXX. An Account of a remarkable Fifh, taken in 
King-Road, near Briftol : In a Letter from Mr. 
James Fergufon, to Thomas Birch, D. D. Secret . 
R. S. p. 170. 
XXXI. Rules and Examples for limiting the Cafes in 
which the Rays of refraCied Light may be reunited 
into a colour lefs Pencil: In a Letter from P. Mur- 
doch, M. A. and F. R . S. to Robert Symmer, 
Efq ; F.R.S. Jan. 3, 1763. ^ p. 173. 
XXXII. An Account of the Succefs of the Bark op the 
Willow in the Cure op Agues. In a Letter to the 
Right Honourable George Earl of Macclesfield, 
P ref dent of R. S. from the Rev. Mr. Edmund 
Stone, op' Chipping - Norton in Oxfordihire. 
P; J 95 - 
XXXUI. An Account of an Earthquake in Siberia : In 
a Letter from Monf Weymarn to Dr. Mounfey, 
Principal Phy/ician of the Emperor op' Ruffia, 
F. R. S. Tranfated prom the French, Communi- 
cated by Mr. Flenry Baker, F. R. S. p. 201. 
XXXIV. Roman Infer iptions at Tunis in Africa, 
copied about the Tear 1730, by Dr. Carilos, a Na- 
tive of Madrid, then Phyfcian to the Bey op Tunis, 
b commu- 
