To R. F. Cooke   17 August 1872

My dear Sir

I will tell all foreigners that you will supply them at £75 per 1000 copies.¹ This sounds large, but after all I think you take an exaggerated view of the subject, for 1^s-6^d added to the price of the book will entirely cover this outlay.

I c^d not possibly have given many of the expressions by wood-block but I w^d not have given so many photos had I forseen the cost.

I enclose a translation of M. Koch’s letter;² & will you be so kind as to act accordingly. I will write by this post to him & tell him the price of the heliotypes.

I am very much obliged for all the great trouble you have taken in assisting me— | My dear Sir | yours sincerely | Ch. Darwin