Letter 6492F Darwin, C. R. to Behrens, Frederick 6 Dec 1868 Summary Add + Sends his autograph. Transcription Down, Bromley Kent Dec 6. 1868.— Mr. Darwin has much pleasure in sending the subjoined signature. | Charles Darwin Footnotes Add +f1 6492f.f1See letter from Frederick Behrens, 3 December 1868.