356 JAS. J. SIMPSON— ENTOMOLOGICAL RESEARCH, &C. 



Legislation. — Some sort of Mosquito Ordinance ought to be promulgated in 

 Northern Nigeria, whereby, to aid the Sanitary Department in its work, it might 

 be made a punishable offence to have tins and such-like receptacles lying about 

 compounds. Further, it might be enacted that when due notice was given by the 

 sanitary officer to have any water pits, etc., where mosquitos might breed, filled 

 in, refusal or neglect to comply with the instructions might also be made a 

 punishable offence. 



An Ordinance ought also to be promulgated empowering the Senior Political 

 Officer of the Province, on the advice of a Medical Officer, to have any person 

 suffering from sleeping sickness removed to a segregation camp. 



Subjects requiring further investigation. 



Many profitable lines of research besides the geographical distribution of 

 blood- sucking insects will present themselves to those interested in this subject, 

 but I should like to draw attention to a few of these as suggested in the present 

 report. 



(1) A mosquito survey on the lines suggested in Dr. J. W. W. Stephens' 

 paper in a former issue of this Bulletin.*' 



(2) The examination of the blood of all game, large and small, in the 

 Protectorate for Protozoa. 



(3) An investigation into the forms of trypanosomiasis in hoi'ses and cattle. 

 Are there any distinct diflierences in the clinical symptoms in those animals 

 infected with Trypanosoma vivax and those infected with T. hrucei ? Are there 

 other species of Trypanosomes ? Is there any difference in the distribution 

 of the various forms of this disease ? Which is the most virulent type ? 

 What is the relative susceptibility to treatment ? 



(4) Experiments to determine to what extent Glossina, Stomoxt/s or 

 Tabanidae are implicated in the transmission of trypanosomiasis. 



(5) Observations to ascertain the breeding places of Glossina and other 

 blood-sucking insects. 



(6) An investigation into the occurrence of Piroplasmosis in various animals. 

 In conclusion, I wish to take this opportunity of recording my indebtedness to 



His Excellency the Governor, Sir Hesketh Bell, K.C.M.G., for the many 

 facilities afforded by him and the personal interest he took in the investigation ; 

 to Mr. M. H. de la P. Beresford, Secretary to the Administration, for the 

 expeditious way in which all arrangements were carried out ; to Dr. S. W. 

 Thompstone, C.M.G., the Principal Medical Officer, for his kind co-operation 

 and many suggestions based on a long experience of the Protectorate ; to Dr. 

 Cameron Blair, the Senior Sanitary Officer and Dr. J. W. S. Macfie, with 

 whom I spent a considerable time on trek ; to all those who have sent collections 

 and whose records are included in this report and also to the various officials, 

 medical and political, in whose Provinces I travelled, for their kind hospitality, 

 the whole-hearted support which was everywhere evidenced, and the many ways 

 in which they aided in carrying through the investigation expeditiously. 



* Bull. Ent. Res. II, i^t. 1, pp. 1-8. 



