1 3 8 Mijcellanea Curiofa. 



m 



expreiTed x n which multiplied by x 9 makes 



% J x , the flowing Quantity of which, 



m A~ 2 

 n — 1 



viz,, _ divided by the Area of 



w -J- 2 n 



m Ar 1 , 

 n — 1 1 m-\-2n 



the Paraboloid - — - x n , gives at, 



the diftance of the Center of Gravity from 

 the Vertex. 



The Center of Gravity of a Portio 

 Sphere, is found after the fame raamr 



its Fluxion \dxx — x 2 x multiplied into j? 



n 



makes 4, dx 2 x — x*x, whofe flowing Quan- 



tity \\dx lt — %x*\ divided by the folid. 



Content of the Portion, viz, 4 \ dxx — \ # 3 , 

 ' n 

 ' \ d — I x qd -~ $x 



gives x, or - ■ ' ' at, the di- 



2 d — I x 6d — 



ftance of the Center of Gravity from the 

 Vertex. 



My 



