The Exploration of the Interior
Although the commercial activities of the tribes inhabiting the African Mohammedan empires, and the construction of trade routes connecting Senegal with the Red Sea, had opened up the Soudan to Europeans, the territory which since 1884 has been known as German Cameroon was practically unexplored at the beginning of the nineteenth century. In 1822 an English expedition succeeded in reaching Lake Tchad and exploring its western and southern boundaries. This discovery was supplemented in 1851-52 by Barth and Overweg. Barth went from Kuka to Yola, and discovered the upper course of the Benue. He penetrated further, through the country south of Lake Chad to Bagirmi. In 1854 Baikie went up the Benue, as far as Djen, about fifty kilometres from Yola. Rohlf’s journey in 1865-67 and Nachtigal’s in 1869-74 are of little importance. In 1879 began the activity of Edward Flegel, who, on the steamer Henry Benn, navigated the Benue as far as Garna. Of much greater importance were the explorations of the Benue district in 1882 and 1883, the southern limit of which was marked by the towns of Ngaumdere, Banjo, Gaschaka, and Takum.
The knowledge of the coastal district was extremely limited. Burton and Mann had ascended the Cameroon mountains in 1861-62. In 1872-75 three German scientists, Buchholz, Reichenow and Lüders, made important zoological discoveries, while Rogozinsky, a Pole, in 1883, reached as far as Lake Barombi. But all efforts to penetrate into the interior were frustrated by the impracticable condition of the roads, the unhealthiness of the coast district—which was for the greater part uninhabited virgin forest—and by the hostile attitude of the natives.
After many fruitless endeavours to explore this coastal region, an expedition in 1888 succeeded in crossing from Batanga by way of Njong and Sanaga, and in settling the boundary between Bantio and Sudannegern. The effort to reach the Cameroon estuary was frustrated by the opposition of the Bakoko; and after a journey of much difficulty the expedition returned to the coast. In 1899 a station was established and a foothold secured. In the same year the region north of Duala was explored, and the forest district traversed, the plateau of Baliland was ascended, and the grassy lands reached. With indescribable difficulty the districts from Ibi on the Benue to Yola were traversed. In 1902-4 an Anglo-German expedition, after a very minute survey, fixed the boundary line between Yola and Lake Chad, and in 1908 an agreement was made between Germany and France regarding the south and east boundaries. In 1907-8 the frontier between Cameroon and the Nigerias was surveyed by the British and German representatives, and the approximate line of demarcation subsequently settled between the two Governments was fixed and marked by an Anglo-German commission in 1912-13.