Summary

Thanks MN for essay ["Die Congerien", Abh. Geol. Bundesanst. Wien 7 (1875)]. It is the best case CD has met, showing "direct influence of conditions of life on the organization". A. Hyatt has come to same conclusion: that closely similar forms may be derived from distinct lines of descent. CD did not emphasise in Origin the direct action of environment on modification of species; most of the best evidence has been observed since its publication.

Summary

Asks MN about trustworthiness of Leopold Würtenberger. Would like to aid LW financially in his work.

Summary

Has offered Leopold Würtenberger money to aid in his work.

Summary

Respects Leopold Würtenberger’s work. Will initiate inquiry if CD wishes. LW’s work suffers from his limited circumstances. Will assist him if he asks.

Mentions his own forthcoming work ["Zur Kenntniss der Fauna des untersten Lias in den Nordalpen", Abh. K.-K. Geol. Reichsanst. 7 (1874–82), vol. 5].

Summary

Sends new publication [see 11838].

Plans major study of evolutionary palaeontology.

Comments on form series discovered by Joachim Barrande.

Has not heard from Leopold Würtenberger.

Summary

Thanks for Earthworms.

Sends preferred address.