- L 76 j 
§ LXVIII. For the diminution of the gravity from 
the North to the South. 
It has been feen in the preceding chapter, that 
when a fpheroid is not fuppofed homogeneous, the 
diminution of the gravity from the pole to the equa- 
tor will be greater than in the cafe of homogeneity. 
Hence, if my theory holds in our globe, the whole 
decreasing of the gravity will be equal to -or 
greater, and never lefs ; fince the ratio of 230 to 231 
will (§ XXI.) exprels the ratio of the adtion of gra- 
vity at the equator and pole, when the fpheroid is 
homogeneous. 
And this conclufion of my theory quite agrees with 
experience ; for, from all the observations relating to 
the gravity made in Several places of the globe, either 
by adtual meaSures of the Second pendulum, or by the 
difference of duration of the Same pendulum’s vibra- 
tions, it appears, that the gravity decreafes from the 
north to the South in a greater ratio, than it would be 
if the total diminution from the pole to the equator 
were only yjt* 
§ 65?. For the proportion of the two diameters. 
Suppofing, as in the precedent chapter, the earth 
' originally fluid, it follows, from the § LXV. that the 
ratio of the two diameters cannot exceed that of 2 30 
to 231 ; Since, § XX. 230 to 231 is the ratio in the 
cafe of the homogeneous Spheroid; and as the menfu- 
rations of the gravity cannot agree with the fuppofition 
of the homogeneity, the diameters of the earth ought 
io be in a ratio lefs than 230 to 231. 
Without 
