I hope, however, to publish next summer the results of my long-continued experiments on the wonderful advantages derived from crossing.

I shall continue to work as long as I can, but it does not much signify when I stop, as there are so many good men fully as capable, perhaps more capable, than myself of carrying on our work; and of these you rank as the first.
With cordial good wishes for your success in all your work and for your happiness.
LETTER 249.

TO E.RAY LANKESTER.

Down, April 15th [1872].
Very many thanks for your kind consideration.

The correspondence was in the "Athenaeum." I got some mathematician to make the calculation, and he blundered and caused me much shame.