INDEX. 
Earth, density of result of the experiments, 
* attraction of the mahogany case on the balls, 
* — perturbations of method of obtaining swiftly converging 
series, useful in computing them, 
Equations , on their roots, - - _ 
Evelyn, Sir George Shuckburgh. An account of some en- 
deavours to ascertain a standard of weight and measure. 
Eye, account of an orifice in it, - 
F 
Feld spar, specific gravity of, 
Fluids , on the resistance of bodies moving in them, 
Foot, Roman, on the length of, 
Foramen Ovale of the heart , remarks on, 
Foramina Tbebesii of the heart , observations on, 
Friction , on the heat excited by it, 
Garrow, Mr. Edward. Letter from, concerning the Corun- 
dum stone, - _ 
Georgium Sidus, on the satellites of, _ _ 
. retrograde motion of its satellites, 
. - — investigation of additional satellites, 
— — — an interior satellite, 
an intermediate satellite, 
• an exterior satellite, 
t h e m0 st distant satellite, - 
■ on its supposed rings, - _ 
on the flattening of its polar regions, 
~ on the light and size of its satellites, 
“ on the vanishing of its satellites, 
“ on the revolutions of the new satellites, 
Gold, oxide of, experiments on its reduction, _ 4 r Q 
Graham, Mr. George. Account of a standard of measure procured 
by him, 
Greville, The Right Hon. Charles. On the Corundum. stone 
from Asia, 
H 
Harris , Mr. Account of some standard weights made by him 
Hastings , account of a phenomenon seen there, 
mdccxcviii. ^ p| 
page 
520 
5 2 3 
* 
5 2 7 
369 
133 
S 3 2 
412 
1 
169 
107 
103 
80 
405 
47 
48 
49 
59 
62 
6 3 
64 
67 
67 
7 i 
7 i 
78 
462 
167 
403 
J 73 
3 57 
