JVC is willing to translate [Variation], especially because of his conviction that progress of biology depends on proving CD’s theory.

Ernst Haeckel’s book [Generelle Morphologie (1866)] will do mischief because EH is so immoderate. Suggests CD tell EH that he has done him a bad service. CD is the only one to whom EH would listen.

Asks CD to decide which translator he would prefer for Variation. JVC frankly thinks Carl Vogt not the best man to introduce CD to the German public, though he has a greater name than JVC.

Vogt now preaches materialism in its most absurd form.