190 JAS. J. SIMPSON — ENTOMOLOGICAL RESEARCH IN SIERRA LEONE. 



work brought me in contact. Especially should I like to express my indebted- 

 ness to Mr. E. E. Evelyn, I.S.O., through whom all arrangements were carried 

 out in a most expeditious manner ; to Dr. R. M. Forde, the Principal Medical 

 Officer, and Dr. R. H. Kennan, the Senior Sanitary Officer, for their kind 

 co-operation ; to Dr. D. Alexander, now Senior Sanitary Officer of the Gold 

 Coast, and Col. Newstead, the Officer Commanding the West African Frontier 

 Force at Daru, for much kind hospitality and assistance ; 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 districts I travelled, for their 

 kind hospitality, their whole-hearted support, and the many ways in which they 

 helped to further the investigation. 



