| In the 1970s, the veteran curator of the reptile house of the University of Ghana, at Legon, near Accra, proudly told visitors that he had participated in a survey of the snakes of the Gold Coast led by George Cansdale, later of the London Zoo and famous for his BBC TV animal programmes of the 1950s. 'We found,' the curator would say, 'seventy different species of snakes, of which fourteen are ven |
