To Ernst Dieffenbach   8 April [1845]

My dear Sir

I have just heard that you are in London.— I wrote a few days ago to Giesen¹ to thank you very much for your copy of my Journal & to say how exceedingly pleased I am with its appearance & how much gratified I am in my work being thus rendered in some degree known in Germany.—

I also wrote to explain the circumstances, which makes me so anxious to have the plates & M.S. back again, & unfortunately I have not yet received them!

Have you written to Viewig?² Pray write again— I am sincerely sorry thus to give you so much trouble; but I am sure you will not think me unjustifiable in urging you to write again to Viewig to send the goods to Smith & Elders 65 Cornhill.

I hope you will write to me & tell me your plans & how long you are likely to be in England.

I sh^d much like to see you: but unfortunately, I was in London last week & have been unwell ever since.

Believe me dear Sir | Yours very faithfully | C. Darwin

P.S. | Pray tell Viewig not to wait to alter the Plates. I hope, however, there is no cause for writing & that you have taken care to bring the Plates &c with you.