7 8 4 Mr . mutton’s Calculations to afcertain 
our experiment : or T \, or between } and i of the whole 
magnitude will be metal ; and confequently or nearly 
| of the diameter of the earth, is the central or metalline 
part. 
Knowing then the mean denlity of the earth in com- 
parifon with water, and the denlities of all the planets 
relatively to the earth, we can now aflign the propor- 
tions of the denlities of all of them as compared to wa- 
ter, after the manner of a common table of fpecific gra- 
vities. And the numbers expreffing their relative den- 
lities, in refpedb of water, will be as below, fuppoling the 
denlities of the planets, as compared to each other, to be 
as laid down in Mr. de la lande’s aftronomy. 
Water ... i 
The Sun . . i-A. 
Mercury . . 94 
Venus , . . 54| 
The earth . . 44 
Mars .... 34 
The Moon . . 3— 
Jupiter ... 144 
Saturn . . . !f- 
Thus then we have brought to a conclulion the com- 
putation of this important experiment, and, it is hoped, 
with no inconliderable degree of accuracy. But it is the 
firft 
