May 25th: Paper on Lythrum finished.
September 13th: Paper on Climbing Plants finished. Work on "Variation under Domestication."
November 30th: Copley medal awarded to him.
1865.
January 1st: Continued at work on Variation until April 22nd. The work was interrupted by illness until late in the autumn.
February: Read paper on Climbing Plants.
December 25th: Began again on Variation.
1866.
Continued work at "Variation under Domestication."
March 1st to May 10th: At work on Edition IV. of the "Origin." Published June (1250 copies). Read paper on Cytisus scoparius to the Linnean Society.