James Ross reaches 78.10° S.; discovers Victoria Land, and the volcanoes Erebus and Terror. 1841. Eyre traverses south of Western Australia. 1842-62. E. F. Jomard's _Monuments de la Géographie_ published. 1843-47. Count Castelnau traces the source of the Paraguay. 1844. Leichhardt explores Southern Australia. 1845. Huc explores Tibet. 1845. Petermann's _Mittheilungen_ first published. 1845-47. Franklin's last voyage. 1846. First edition of K. v. Spruner's _Historische Handatlas_. 1847. J. Rae connects Hudson's Bay with east coast of Boothia. 1848. Leichhardt attempts to traverse Australia, and disappears. 1849-56. Livingstone traces the Zambesi and crosses South Africa. 1850-54. M'Clure succeeds in the North-West Passage. 1850-55. Barth explores the Soudan. 1853. Dr. Kane explores Smith's Sound. 1854. Rae hears news of the Franklin expedition from the Eskimo. 1854-65. Faidherbe explores Senegambia. 1856-57. The brothers Schlagintweit cross the Himalayas, Tibet, and Kuen Lun. 1856-59. Du Chaillu travels in Central Africa. 1857-59. M'Clintock discovers remains of the Franklin expedition, and explores King William Land. 1858. Burton and Speke discover Lake Tanganyika, and Speke sees Lake Victoria Nyanza. 1858-64. Livingstone traces Lake Nyassa. 1859. Valikhanoft reaches Kashgar. 1860. Burke travels from Victoria to Carpentaria. 1860. Grant and Speke, returning from Lake Victoria Nyanza, meet Baker coming up the Nile. 1861-62. M'Douall Stuart traverses Australia from south to north. 1863. W. G. Palgrave explores Central and Eastern Arabia. 1864. Baker discovers Lake Albert Nyanza. 1868. Nordenskiold reaches his highest point in Greenland, 81.42°. 1868-71. Ney Elias traverses Mid-China. 1868-74. John Forrest penetrates from Western to Central Australia. 1869-71. Schweinfurth explores the Southern Soudan. 1869-74. Nachtigall explores east of Tchad. 1870. Fedchenko discovers Transalai, north of Pamir. 1870. Douglas Forsyth reaches Yarkand. 1871-88. The four explorations of Western China by Prjevalsky. 1872-73. Payer and Weiprecht discover Franz Josef Land. 1872-76. H.M.S. _Challenger_ examines the bed of the ocean. 1872-76. Ernest Giles traverses North-West Australia. 1873. Colonel Warburton traverses Australia from east to west. 1873. Livingstone discovers Lake Moero. 1874-75. Lieut. Cameron crosses equatorial Africa. 1875-94. Élisée Reclus publishes his _Géographie Universelle._ 1876. Albert Markham reaches 83.20° N. on the Nares expedition. 1876-77. Stanley traces the course of the Congo. 1878-82. The Pundit Krishna traces the course of the Yangtse, Pekong, and Brahmaputra. 1878-79. Nordenskiold solves the North-East Passage along the north coast of Siberia.