194 



DR. JAMES J. SIMPSON. 



journey I visited Yendi, formerly an important German post in Togoland, thence 

 going to Salaga and Kete-Krachi, where I crossed the Volta and proceeded to join 

 the main north road at Atabubu (Tabobo). 



This report must be taken in conjunction with my previous report already referred 

 to. It may be advisable to point out here that many of my notes were lost on my 

 homeward voyage, so that certain sections of this account of my work are not so 

 complete as they might otherwise have been. For all practical purposes, however, 

 the actual conclusions arrived at are in accordance with the observations made. 



Appended is a table showing the weekly rainfall from 1st June, 1915, to 

 31st December, 1916. This is the meteorological condition which most greatly 

 affects the seasonal prevalence of tsetse, and also to a great extent puts a limit to 

 bush work. This table should be consulted when reading inter alia the section on 

 the " Disparity in the proportion of sexes of Glossina." 



Month. 



1st week. 



2nd week. 



3rd week. 



4th week. 



Total 

 for month. 



June 



1-81 



nil 



1-83 



1-63 



5-27 



July 



1-25 



2-03 



2-74 



nil 



6-02 



August 



nil 



0-73 



2-21 



1-91 



4-85 



September 



2-92 



2-68 



0-05 



2-69 



8-34 



October 



1-43 



0-34 



0-54 



» 



0-35 



2-66 



November 



nil 



nil 



nil 



nil 



nil 



December 



nil 



nil 



nil 



nil 



nil 



January 



nil 



nil 



nil 



nil 



nil 



February 



nil 



nil 



nil- 



nil 



nil 



March 



Oil 



nil 



OSS 



0-60 



1-54 



April 



1-20 



0-85 



0-15 



2-57 



4-77 



May 



1-83 



nil 



3-25 



0-92 



6-00 



June 



1-61 



2-49 



0-88 



0-35 



5-33 



July 



1-70 



2-30 



0-47 



1-97 



5-44 



August 



1-96 



0-97 



1-78 



8-57 



13-28 



September 



1-73 



0-74 



0-87 



1-29 



4-63 



October 



1-48 



0-99 



0-34 



nil 



2-71 



November 



nil 



nil 



1-17 



0-70 



1-87 



December 



nil 



nil 



nil 



nil 



nil 



