Expresses gratification that JVC is to undertake new translation and revision of German edition of the Origin.

Has heard many complaints about Bronn’s translation. JVC would be justified in omitting Bronn’s appendix.

Suggests additions and changes, including reference to C. W. v. Nägeli’s Entstehung und Begriff [1865], though he disagrees with it.

Answers some question about species.

Sends biographical sketch.

Now considers that a note on Nägeli would have to be too long to include. Discusses his differences with Nägeli. Cannot believe in spontaneous generation. At present the principle of life seems to him beyond the confines of science.