More Letters of Charles Darwin — Volume 1 A Record of His Work in a Series of Hitherto Unpublished LettersCHAPTER 2.XI.--Botany, 1863-1881. 2.XI.I. Miscellaneous, 1863-1866.Chapter 613 wordsPublic domain2.XI.II. Correspondence with Fritz Muller, 1865-1881. 2.XI.III. Miscellaneous, 1868-1881.