TO G.JAGER.Down, February 3rd, 1875.
I received this morning a copy of your work "Contra Wigand," either from yourself or from your publisher, and I am greatly obliged for it.

(266/1.

Jager's "In Sachen Darwins insbesondere contra Wigand" (Stuttgart, 1874) is directed against A.Wigand's "Der Darwinismus und die Naturforschung Newtons und Cuviers" (Brunswick, 1874).) I had, however, before bought a copy, and have sent the new one to our best library, that of the Royal Society.

As I am a very poor german scholar, I have as yet read only about forty pages; but these have interested me in the highest degree.

Your remarks on fixed and variable species deserve the greatest attention; but I am not at present quite convinced that there are such independent of the conditions to which they are subjected.