^£0 2jf, hutton on Cubic Equations, &*c. 
And thus we may find the fums of as many feries of 
thefe kinds as we pleafe ; as well as the fum of any of 
the general feries, by means of the roots of given cu- 
bic equations. As to the fummation of other forms of 
feries by means of the roots of equations of other or- 
ders, I fhall perhaps treat of them on feme future oc- 
cafion. 
