92 



and a half months, to only ^304. This is exclusive of passages, oil, 

 cement, and of the services of carts, and of twelve men lent by the 

 governor. The wages of the workmen may be put roughly at about 

 one pound a month each. Detailed accounts have been submitted to 

 the School Committee and to the subscribers. 



OTHER EXPEDITIONS. 



On passing Bathurst, and during my visit to the Gold Coast, I was 

 able to arrange with Sir GEORGE DENTON, K.C.M.G., and Major 

 NATHAN, C.M G., Governor of the Gambia and the Gold Coast, to 

 start similar work in Bathurst, and in the principal towns of the latter 

 colony. Consequently, Dr. EVERETT DUTTON, Walter Myers Fellow, 

 was despatched to Bathurst to make a preliminary survey of the sub- 

 ject there a thing which had not yet been done ; and to start some 

 operations against mosquitoes, with the help of the governor, and of a 

 sum of money from the Sierra Leone fund. As regards the Gold 

 Coast, a handsome sum of money has been specially placed at my 

 disposal by a philantrophical gentleman to pay the salary of a delegate ; 

 and I am happy to be able to state that Dr. BALFOUR STEWART has 

 accepted the post. Details of these expeditions will be given in later 

 reports. 



APPENDIX. 



LETTER FROM C. W. DANIELS, ESQ., M.B. CANTAB. 

 NOTE. In reading this letter it is necessary to remember that 

 Dr. Daniels inspected the Sierra Leone operations little more than 

 tivo months after they had been commenced. See also the remarks 

 under the headings^ PROGRESS OF THE CAMPAIGN and RESULTS 

 above R. Ross. 



ist October , 1901. 

 DEAR Ross, 



I have carefully examined the various works which have been 

 undertaken with a view to the serious diminution in the number of 

 mosquitoes in Freetown, Sierra Leone. The common mosquitoes 

 found are : Anopheles costalis^ the carrier of malaria, and also of 

 Filaria nocturna. Stegomyia fasciata (Culex taeniatus) or brindled 

 mosquito, Calcutta, the mosquito supposed to carry yellow fever. 



Two Culices (I think, fatigans^ which carries Filaria nocturna^ 

 and another which is known both on the East Coast and Shire and 

 Uganda Highlands, but does not attack man) were found, but not 

 commonly. 



