As editor of the new journal, Kosmos, thanks CD for the permission he has granted Ernst Haeckel to publish with CD’s approval.

Cites his long support for evolution as exemplified by his book [Die botanische Systematik in ihrem Verhältniss zur Morphologie (1866)].

CD has many German supporters.

Thanks for EK’s book [Werden und Vergehen (1876)].

Regrets he cannot write for EK’s journal, but his son, Francis, may do so.

Suggests EK as editor urge on readers [of Kosmos] the investigation of the causes of variability; why, for instance, do wild Pampas cattle change colour when domesticated? Thinks experiments and observations on recently domesticated animals and cultivated plants would throw light on the subject.