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O. volvulus is transmitted by sandflies, and their role in the transmission of onchocerciasis was discovered by the Scottish parasitologist Breadablane Blacklock in Sierra Leone in the mid-1920s (19). There are accounts of the history of onchocerciasis by Grove (105) and Muller (192).
Â» more... 1  The first actual find of a palaeolithic implement was that of a rudely fashioned flint in a sandbank at Menchecourt in 1841 by Boucher de Perthes. 2  JONATHAN BOUCHER (1738-1804), English divine and philologist, was born in the hamlet of Blencogo, near Wigton, Cumberland, on the 12th of March 1738.