IE SPHERE. :: 



Lastly, con* 1.? the sphere; that is, for 



< greater . we have, aa in the tint case, 



C 

 3r-V- 



-ii*eoui-nee of the diBCont inuity arising from the 

 lea of the m**- mt C i* not n 



the same value aa t 



i the preceding ca> 

 ought to have 



If 



"?' 

 C M; 



we shall have tor exu-riml |x.i 



rfF .!/ 

 -7- 



re have for its \M 



agrees with Art 



preceding appli< the sphere serres Terr well to 



the formula?, but it doea not give an indepct 

 of the results win* h it involves; becau5 

 process in assumes that the attraction of a .-; 



ternal par Hut we may ea*i \ tin- 



connected with the attraction of a spherical ahell with- 

 ' 



Consider a spherical shell wl. ty is any function 



radius ; then we have, aa shewn at the commencement 

 t th present Article, the result 



,/r O 

 W m , 



'.* constant when we pass from point to point without 



