To John Murray   13 November 1872

My dear M^r Murray

Many thanks for the 210^£ for the last reprint of the Origin. The next thousand, as there will be much less outlay, will give us both larger proportional profit.—¹ I am heartily glad it has gone off so well, & will I hope sell moderately for some years to come.

With respect to the Expression Book, I am not short of money, & it will be fairer for me, & I hope quite convenient to yourself to defer paying me till you actually receive payment from the Bookseller for half or $\frac{2}{3}$ of the copies printed, & then let me have the $\frac{2}{3}$ of profit whatever it may amount to.— I am extremely pleased at the success of the book, as far as sale is concerned, & as far as I hear of the opinion of my friends. At some time hence please let me hear how many copies are struck off—

My dear M^r. Murray | Yours sincerely | Ch. Darwin

To | J. Murray Esq