De Long, George Washington (1844-1881)(2)
Herschel, William (1738-1822)(2)
Petherick, John (1813-1882)(2)
Abbadie, Antoine d' (1810-1897)(1)
Baikie, William Balfour (1824-1864)(1)
Berthollet, Claude-Louis (1748-)(1)
Boyd, Andrew Kennedy Hutchinson(1)
Bunsen, Christian Karl Josias von (1791-1860)(1)