t V ] 
CONTENT S 
T O 
VOL. LXVI. Part I. 
I. Q N the Nature of the Gorgonia; that it is a real Ma- 
rine Animal , and not of a mixed Nature , between 
Animal and Vegetable. By John Ellis, Efq. F. R. S. in 
a Fetter to Daniel Solander, M. D. F. R . S . page i 
II. Lhe Variation of the Compafs •; containing 1719 Ob- 
fervations to , in , and from , the Eaft Indies, Guinea, 
Weft Indies, and Mediterranean, with the Latitudes 
and Longitudes at the Lime of Objervation. Lhe Lon- 
gitude for the mofl Part reckoned from the Meridian of 
London ; if other wife, it is taken Notice of in the Mar- 
gin. By Mr. Robert Douglafs. Recommended to the 
Public by the late Dr. Halley. Communicated by the 
Rev. Nevil Maikelyne, Aflronomer Royal , F. R. S. 
with a Letter prefixed from William Mountaine, Efq. 
F. R. S. to Mr. Mafkelyne. p. 1 8 
III. Proportions fele&ed from a Paper on the Divifion of 
Right Lines , Surfaces , and Solids . By James Glenie, 
A. M. of the Univerfity of Edinburgh. Communicated 
by the Aftronomer Royal. p. 7 3 
IV. A 
