Mijcellanea Curiofa. 507 



accounted for, than by fappofing this Center of 

 Gravitation removed for a time, towards the 

 middle of the then inhabited Parts of the World ; 

 and a change of its Place, but the Two Thou- 

 fandth Part of the Radius of ihh Globe, were iuf- 

 ficient to bury the Tops of the higheft Hills un- 

 der Water. 



Thirdly, That in all Parts of the Surface of 

 the Earth, or rather in all Points equidiftant 

 from its Center, the Force of Gravity is nearly 

 equal ; fo that the length of the Pendulum vi- 

 brating Seconds of Time, is found in all Parts of 

 the World to be very near the lame. 'Tis true 

 at Sr. Helena, In the Latitude of 16 Degrees 

 South, 1 found that the Pendulum of my Clock, 

 which vibrated Seconds , needed to be made 

 fhorter than it had been in England, by a very 

 fenfible Space (but which at that time I neg- 

 lected to obferve accurately) before it would 

 keep time ; and fince the like Obfervations have 

 been made by the French OHfervers, near the 

 /EquinoBial : Yet I dare not affirm, that in 

 mine it proceeded from any other Caufe, than 

 the great Height of my Place of Obfervarion 

 above the Surface of the Sea, whereby the 

 Gravity being diminimed, the length of the 

 Pendulum vibrating Seconds^ is proportionably 

 fhortned. 



"Fourthly, That Gravity does equally affect: all 

 Bodies, without regard either to their Matter, 

 Bulk, or Figure; fo that the Impediment of 

 the Medium being removed, the moft com- 

 pact and moft loofe, the greareft and fmalleft 

 Bodies would defcend the lame Spaces in equal 

 X ^ Times ; 



