Christian Gottfried Ehrenberg

Journal of the Russian-Siberian Journey 1829

The Berlin zoologist and botanist Christian Gottfried Ehrenberg accompanied Alexander von Humboldt together with the mineralogist Gustav Rose on the Russian-Siberian journey in 1829. All three travelers kept their own field journals. [More]

Kerstin Aranda

Christian Gottfried Ehrenberg's Journal of the Russian-Siberian Journey 1829 - An Introduction

Christian Gottfried Ehrenberg’s journal deepens and corrects our knowledge about the events and scientific program of the Russian-Siberian journey in 1829. It documents the significance of the journey for Ehrenberg’s microbiological research, which was to be the focus of his work in the following decades.

Correspondence with Johann Moritz Rugendas

The landscape painter and traveler Johann Moritz Rugendas was one of several artists whose work was inspired by Alexander von Humboldt’s aesthetic ideas. Humboldt’s correspondence with Rugendas consists of 26 letters written between 1825 and 1855...

Correspondence with Joseph Dalton Hooker

The correspondence between Humboldt and British botanist Joseph Dalton Hooker consists of 15 known letters from 1845 to 1857. Humboldt was fascinated by his younger colleague and supported Hooker's travels and botanical work. The first letters of this correspondence are now published.

Correspondence with Christian Gottfried Ehrenberg

The correspondence between Alexander von Humboldt and Christian Gottfried Ehrenberg consists of over 300 letters, the majority of which come from Humboldt's hand. It has recently been expanded with a collection of 22 Ehrenberg letters from the holdings of the Staatsbibliothek zu Berlin.

Correspondence with the Schlagintweit brothers

Between 1854 and 1858 Adolph, Hermann and Robert Schlagintweit undertook a research expedition through India and Central Asia. Alexander von Humboldt provided crucial assistance for their travel plans: He arranged financial support for the journey by Friedrich Wilhelm IV, among other patrons, and ensured that preliminary results of their research were already made public during the journey.

Moritz von Brescius

The Schlagintweit Brothers in Correspondence with Alexander von Humboldt: Insights into an Epistemic Change

Adolph, Hermann and Robert Schlagintweits’ expedition to India and the Himalayas (1854–1858) was the last major exploratory project supported by Alexander von Humboldt. The brothers undertook their travels at a time of profound epistemological changes in the field sciences and the study of foreign cultures. [More]

Correspondence with the Schomburgk brothers

The following edition of Humboldt’s correspondence with the explorers Robert, Richard and Otto Schomburgk covers the years 1838 to 1849. The Schomburgk’s letters include messages from British Guiana, the Dominican Republic and Australia.

Draft of the structure for the Relation historique

The present note is the only known record from Humboldt's estate documenting the original outline of the American travelogue (Relation historique). The structure developed here in 47 chapters shows for the first time Humboldt's overall conception of the unfinished narrative and is a testimony to the numerous corrections that Humboldt had to make to his original plan.

Please cite as

Scientific Travels. Ed. by Ulrich Päßler. In: edition humboldt digital, ed. by Ottmar Ette. Berlin-Brandenburg Academy of Sciences and Humanities. Berlin 2020. URL: