Elaborates on his article ["A popular exposition of Mr Darwin on the origin of species", Macmillan’s Mag. 3 (1860): 81–92]. Was anxious to point out that CD’s method of investigation is philosophically correct. Asks permission to call.

Comments on MS of HF’s address ["On the method of Mr Darwin in his treatise on the origin of species", Rep. BAAS (1861) pt 2: 141–3]. "How odd it is that anyone should not see that all observation must be for or against some view if it is to be of any service."

Describes his health.

The response to his views in Germany, Holland, and Russia.