9 5 Mtfcettanea Curio fa. 



below the /Equilibrium^ and ibmctimes again to* 

 wards thofe parts, where it is condens'd and croud- 

 ed above the mean State, which may be thought 

 contradictory to the Laws of Staticks and the 

 Rules of the ^Equilibrium of Fluids. But thofe 

 that ftiall confider how, when once an impetus 

 is given to a Fluid Body, it is capable of mount- 

 ing above its Level, and checking others that have 

 a contrary tendency to defcent by their own Gra- 

 vity, will no longer regard this as a material Ob- 

 ftacle, but will rather conclude, that, the great 

 Analogy there is between the rifing and falling of 

 the W ater upon the Flux and Reflux of the Sea, 

 and this of the accumulating and extenuating the 

 Air, is a great Argument for the Truth of this 

 Hypothecs : For as the Sea over againft the Coaft 

 of EJfex, rifes andfwells by the meeting of the two 

 contrary Tides of Flood, (whereof the one comes 

 from the S. W. along the Channel of England^ 

 and the other from the North) ; and on the con- 

 trary finks below its Level upon the retreat of the 

 Water both ways in the Tide of Ebb , fo it is 

 very probable that the Air may Ebb and Flow, 

 after the fame manner } but by reafbn of the di- 

 verfity of Caules, whereby the Air may be fet in 

 moving, the times of theie Fluxes and Refluxes 

 thereof are purely Cafual, and not reducible to 

 any Rule, as are the Motions of the Sea, depend- 

 ing wholly upon the regular Courfe of the Moon. 



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