To E. L. Jellinek [after 30 July 1881]
I regret to say that your question1 relates to a subject much too difficult & doubtful for me to attempt any answer in the compassQQQQ of a note.
Regrets he cannot answer ELJ’s question in a note.
Please cite as
Darwin Correspondence Project, “Letter no. 13264,” accessed on 20 October 2016, http://www.darwinproject.ac.uk/DCP-LETT-13264