M. Barret-Lennard an Ernst Haeckel, Berlin, 23. Juni 1897
Viehmann Strasse 1
Herr Reimer says he does not think to have an English translation of your Book (the last one) done yet. I am very anxious to translate something of yours. Perhaps some small book or a lecture now, & the tall book later. Today I got a letter from London asking me to translate your book of „Calcareous Sponges“; if not all, the first few chapters. Can you perhaps arrange with your publishers for me?