of matter they contain. That it is an original 

 law of nature immediately impressed by the Creator, 

 without dependance on, any second cause at all, may 

 appear from the following considerations : 1. Gravity 

 does not require tlie presence of the gravitating or at- 

 tracting Jxxly. 2. The distance being the same, the 

 velocity wherewith gravitating bodies move, depends 

 on the quantities of matter in the attracting body ; a?*d 

 the velocity is not changed, let the mass of the gravi- 

 tating body bs what it will. 3. If gravity depends on 

 any known lav/ of motion, it must be some impulse 

 from an extraneous body : whence^ as gravity is con- 

 tinual, a continual stroke must; also be required. Now, 

 if there be any such matter continually striking on 

 bodies, it must be subtle enough to penetrate al{ 

 bodies. But how should matter, subtle enough to 

 penetrate the hardest ^bodies, and so rare as not sensibly 

 jto hinder ihe motion of any, be able to impel such vi>' 

 bodies toward each other with such force? How does 

 ..this force increase according as the mass of that body, 

 toward which any body moves increases? Whence is it 

 that all bodies at the same distance from the body gra- 

 vitated to, move with the same velocity ? And how can 

 2iratter, which only acts on the surface of the bodie? 

 themselves, or of their internal particles, communicate 

 csuch .motion as in all bodies shall exactly follow lire 

 proportion of the quantity of matter in them ? 



But after a}l comes Mr...IIutchison, calls Sir.Issiu: 

 and all his followers senseless, imphilosophical block- 

 heads, and to solve all the difficulty in a moment, sup- 

 poses the sun, to be the centre of the whole universe, 

 t and to project light every vvay .through every point of 

 space, to the utmost circumference of it. When this 

 light arrives at the circumference, it is condensed into 

 .larger masses and returns in the form of spirit or air, 

 through every point of space to the -sun. There it is 

 again comminuted into lightby the immense lire, and so 

 issues out again to. the circumference. And this double 

 impulse of light moving outward, and spirit moving in- 

 , causes the motion, of all the heavenly bodies, botli 



