Heinrich Barth’s invitation to join the British expedition can be traced back to a German cartographer named August Petermann. Petermann was working at the London Observatory when he heard about James Richardson’s proposed African expedition and its need for a scientist. Petermann told Chevalier Bunsen, the Prussian ambassador to the Court of St. James’s, who approached Richardson and offered to find him the best available German scientist. Richardson was delighted, since Germany’s scientists were considered the finest in Europe. Carl Ritter and Alexander von Humboldt, eminences at the University of Berlin, recommended Barth.
From the start, Petermann took a keen, almost proprietary, interest in the expedition. He became an important long-distance affiliate and cheerleader. He lobbied the British Foreign Office to send more funds and helped to arrange for another German scientist, Eduard Vogel, to join the expedition. When Barth sent rough maps and measurements of the mission’s routes back to Britain, the Foreign Office hired Petermann to turn them into works of cartography.
All this was fine, but in his over-enthusiasm Petermann also sent his maps to German publications, along with information from Barth’s dispatches. This did not sit well with some people at the FO and the Royal Geographical Society, and fed the resentment against Germany in some British quarters that I described in an earlier post.
“Of course it is Mr. Petermann’s object,” wrote the FO under-secretary, “to make himself, for his own profit, and also for his own glory, the historiographer of all the discoveries of Barth and Overweg: but that is not our object, or intention . . . Drs. Barth and Overweg were members of Richardson’s expedition, paid by us, and traveling at our expense,” he continued, and any public announcements about the expedition should come from the Royal Geographical Society, “which properly speaking is our natural medium of partial geographical communications.”
Petermann and Chevalier Bunsen, he added, seemed to consider the British “the mere paymasters of the expedition, while the fruits belong to Germany. This is a mistake.”
The secretary of the RGS expressed his irritation more crudely, writing about the expedition in the society’s journal, “In connection with Lake Chad and other African names, it may be observed that the Germans are adopting various ways of spelling them, because they find it difficult to say ‘cheese.’”
This was too much for Petermann. He responded with a nine-page open letter that called the RGS report “scurrilous and offensive.”
When Barth returned to England, he stepped into this stew. Under questioning from the RGS and the FO, he agreed that Petermann sometimes published information about the mission too hastily, but added that he was motivated by his scientific eagerness to share information, not by German nationalism.
Barth admired Petermann’s passion for exploration and his exquisite skills as a cartographer. (Petermann’s numerous maps are one of the glories of Barth’s book. See examples here, here, and here.) Petermann was also indirectly responsible for the book’s wonderful illustrations. He recommended that Barth hire the German artist J. M. Bernatz, who turned Barth’s sketches into the book’s many finished drawings.
But the cartographer sometimes exasperated the explorer. Barth once wrote, “I believe Petermann has really convinced himself that the African expedition was his work, not mine, and that Providence only brought me safely through all those unspeakable dangers thanks to his ideas and his leadership abilities. . . . Despite his great and justifiably rewarded abilities, Petermann is a real loudmouth.”
Petermann returned to Germany in the mid-1850s and continued to publish extraordinary maps based on discoveries by explorers all over the globe. In appreciation, explorers named geographic features on several continents after him. His devotion to exploration and meticulous cartography is his enduring legacy.
His personal life, however, was evidently unhappy, and he may have been a manic-depressive. In October of 1878, aged 56, he killed himself with a pistol.
In other news, A Labyrinth of Kingdoms was last week’s ”Book of the Week” in The Times of London, which gave it an enthusiastic review (restricted access): A Labyrinth of Kingdoms by Steve Kemper.