Sends copy of the table, which now embodies CD’s suggestions [see 4117].

Gives instances of persons born with two thumbs and comments on hereditary factor.

Thanks WHF for photographs [of niata ox skull]. Will tell Quatrefages de Bréau about the cast. May have the photographs copied for woodcuts to illustrate his book on variation under domestication.

Cites instance in which different varieties of same species of plant flourished side by side under same conditions.

Is applying for a post at Queen's College, Belfast and would be glad if JH would send a testimonial. Is sending some of his papers. Has been carrying out research on atmospheric electricity.

Believes GM’s human bones from Gibraltar must be of very doubtful age. Lyell agrees, but feels any skull found should be forwarded to George Busk or Hugh Falconer.

Suggests GM look carefully for shells in the drift.

Has just returned from collecting in Central America and is planning to go to the Galapagos to gather specimens in all branches of natural history.