. For values of r<R we may, as before, substitute for in the integral. Now

the integral

By transforming to polars, this may be shown to be . Adding this to the part of the integral due to values of *r* > R, we get for the coefficient of *vv',*

As before, the coefficients of *uv', vu', uw',* &c. disappear by inspection.

The coefficient of *ww'*

substituting, for values of *r* > R, as before for for in the integral, it becomes

which, by transforming to polars, may be shown to be . For values of *r* < R we may, as before, substitute for in the integral. Now

On making this substitution, the integral

Adding this to the part obtained before, we get for the coefficient of *ww',*

From the part of which arises from that part of H due to *e* and that part of due to *e',* we can see,