Dear Father,

I have seen the Belgian Bulletin— it is only a short report of the referees on the paper. I can see that Lagrange (who they speak of as a young man) is tackling the subject in a fundamentally different way from me— in fact his work is very different but yet sufficiently on the same subject for me to be glad to finish off my work.²

I think from the way he is attacking it that my problem will be solved infinitely more precisely & thoroughly than his & I think it exceedingly unlikely that he will have found out all that I have done.

I daresay however he’ll find out some of what I miss. His work appears to be much more one of theoretical dynamics. I’m delighted at this.

Yrs affec | G H Darwin

Uncle Ras brisk³

Good acc^t. of A^t. Fanny⁴