From W. T. Preyer   9 May 1870

Dear Sir,

I beg you to accept my very best thanks for the most interesting letter you had the kindness to address to me.¹ I would long since have sent you the biographical sketch: “Charles Darwin”, eine biographische Skizze with your portrait published in the “Ausland”, had I not been absent from here for two months.² I only arrived here, coming from Naples, a few days ago. I hope the german article may not displease you. At the same time I take the liberty of sending you a book published by D^r. O. Peschel, in Augsburg, editor of the “Ausland”.³ It is in his name that I subjoin it to my paper.

I have been told that you intend to write a book on the application of your theory to the development of mankind.⁴ I should feel very much obliged if you would kindly inform me when this work is to be published, but only in case you can find without difficulty five minutes of leisure for, dear Sir | your’s most truly | W^m. Preyer