Humboldt’s unpublished book

A map in Heinrich Berghaus’ Physikalischer Atlas zu Alexander von Humboldt
A map in Heinrich Berghaus’ Physikalischer Atlas zu Alexander von Humboldt’s Cosmos (1845) shows what is now known as the Atlantic Gulf Stream and the Pacific Humboldt Current. Source: The warm ocean current of the Atlantic and the cold current of the Great Ocean shown in parallel according to geographical location and extent. Together with a comparative overview of the temperature of the Peru Current. In: Heinrich Berghaus: Physikalischer Atlas. 2 vols. Gotha 1845/48, plate 2.6. © zvg

A work drafted by Alexander von Humboldt but no longer published is being edited at the University of Bern. It contains a pioneering study on global ocean currents, which is more relevant than ever in view of the dwindling Gulf Stream.

What would it be like if Beethoven’s tenth symphony could be completed? If Stanley Kubrick’s ’Napoleon’, the most famous film never realized, were to be shown in cinemas? If a building were erected according to unrealized plans by Le Corbusier? Such an opportunity presents itself to two literary scholars at the University of Bern, who are editing an unpublished book by Alexander von Humboldt.

Detective work

Towards the end of his life, Alexander von Humboldt (1769-1859) decided to publish a collection of his most important works in two volumes: Kleinere Schriften. Geognostic and physical memoirs. The first volume appeared in 1853, the second remained unpublished. However, Humboldt’s estate in Berlin and Krakow and the archives of the Cotta publishing house in Marbach contain drafts, revised manuscripts and corrected galley proofs, together with letters and other material relating to the planned publication. These can be used to compile the complete work according to Humboldt’s plans in detective work that leads through three countries.

The Bernese scholars Oliver Lubrich and Thomas Nehrlich are compiling the manuscripts and printed copies with Humboldt’s handwritten corrections in order to produce a true-to-the-text reading version, add commentaries and an introduction and publish it as a book - more than 170 years after it should have been published. ’Alexander von Humboldt is a rare case of an author who, despite his great importance, still has much to be discovered,’ says Oliver Lubrich, Professor of Comparative Literature at the University of Bern,

A treasure in the archive

Humboldt selected essays that were particularly close to his heart and of interest to the history of science, for example the account of his famous ascent of Chimborazo, an essay on indigenous myths on the Bogotá plateau and a study on the nocturnal amplification of sound, now known as the ’Humboldt effect’.

For the second volume, he had planned contributions on the global distribution of temperature, comparative mountain research and volcanism. The collection is supplemented by the pictorial atlas Umrisse von Vulkanen aus den Cordilleren von Quito und Mexiko (1853). It contains twelve plates, including the last drawing by the architect Karl Friedrich Schinkel, a depiction of the Andean volcano El Altar based on a sketch by Humboldt.

What did Humboldt know about the drying up of the Gulf Stream?

At the heart of the unrealized second volume is a comprehensive study on ocean currents, which Humboldt had worked on for decades without being able to put it into print at the end. This was pioneering research in marine ecology. ’Since we know that man-made climate change is endangering the Gulf Stream, Humboldt’s interdisciplinary analysis has become incredibly important,’ says Lubrich. Humboldt researched the Pacific current - later named after him and painted by Max Ernst - off the west coast of South America in comparison with the Atlantic Gulf Stream in order to understand the function of ocean currents for the global climate. Humboldt summarized his understanding of nature in three words: ’Everything is interaction.’

In collaboration with scientists from the Alfred Wegener Institute for Polar and Marine Research in Bremerhaven, Humboldt’s study on ocean currents is now to be made ecologically accessible. Thomas Nehrlich, who published Humboldt’s ’Writings on Climate’ in 2023, explains: ’Alexander von Humboldt makes connections clear, the scope of which we can only recognize today.