MifteUanea Curiofa. 373 



however, fo conftant and uniform an EfTecl; muft 

 undoubtedly be owing to one neceffary Caule. 



It has bin, now a confiderable time fince* 

 fafficiently made out, that our Atmofphere is a 

 thin Elaftic Fluid, one part of which gravitates 

 upon another, and whole Preffure is communi- 

 cated every way in a Sphere to any given Part 

 thereof. From hence it follows, That if by any 

 external Caufe the Gravity of any one part fnou'd 

 be taken off or diminiftied, that from all fides a- 

 round this part, the more heavy Air would rufli 

 in to reftore the Equilibrium which muft of ne- 

 ceflity be preferved in all Fluids. Now this 

 violent running in of the heavier Air would cer- 

 tainly produce a Wind, which is no more than 

 a ftrong Motion of the Air in fome determined 

 Direction, if therefore we can find any outward 

 Gaufe that would at thefe ftated Seafons we have 

 mentioned, diminifh the Weight or Preflure of 

 the Atmofphere ; we fhall have the genuine Rea- 

 fbn of thefe Periodical Winds, and the nece£ 

 fary Confequences thereof. 



The Flux and Reflux of the Sea was a Phe- 

 nomenon too vifible, and too much condu- 

 cing to the Subfiftance of Mankind^ and all o- 

 ther Animals, to be neglected by thofe who ap- 

 plyed themfeives to the Study of Nature ■ how- 

 ever all their Attempts to explain this Admirable 

 Contrivance of infinite Wifdom were unfuccefsfull, 

 till Sir Ifaac Newton revezYd to theWorldjufter Prin- 

 ciples, and by a truer Philofbphy than was formerly 

 known, (hew'd us how by the United or Divided 

 Forces of the Sun and Moon, which are enci eafc 

 ed and leffened by feveral Circumltances, all the 

 Varieties of the Tides are to be accounted for. 

 And fince al the Changes we have enumerated 

 in the Atmofphere do fall out at the fame times 

 &h % when 



