Map XVIII Gambia, Simpson (Map to accompany report by Jas J Simpson, showing the distribution of glossina and sleeping sickness in the Gambia) Shows localities where G. palpalis and moristans were found and villages in which Sleeping Sickness occurred. It is estimated that 0.8 per cent of the inhabitants were infected (Todd). Scale 1:500,000. Full gridlines and co-ordinates 1911