﻿152 



JAS. J. SIMPSON — ENTOMOLOGICAL 



Table C has been prepared to demonstrate more clearly the nature and extent 

 of the dry and the wet seasons at the various stations in the Colony. The first 

 line for each station gives the maximum rainfall for any one day in each month, 

 while the second shows the number of days on which rain fell at the respective 

 stations in each month. An examination of the data reveals several important 

 facts : — (1) the enormous daily rainfall during the wet season in the Niger 

 delta, e.g., 7*45 inches in one day in July at Brass, 7*74 inches in one day in June 

 at Akassa, 7 "40 inches at Warri in June, and 8° 25 inches at Epe in July within 

 the same time ; whereas in the northern districts, e.g., at Olokemeji, 2*67 inches 

 in April and 2*89 inches in June were the highest daily rainfalls recorded in 

 1910. (2) It also shows how the rainfall given in Table B was distributed 

 throughout the various months. (3) A comparison of the number of days on 

 which rain fell in the different months will also emphasise the nature of the 

 compound curve of rainfall and the relative positions of its maxima. This would, 

 however, have been more evident had it been possible to give the records in half- 

 monthly frequencv. 



Table D. 



Mean Monthly Humidity for 1910. 



Station. 



Jan. 



Feb. 



Mar. 



Apr. 



May. 



June 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



Mean. 



Brass 



93 



78 



78 



78 



74 



77 



81 



84 



75 



85 



80 



80 



80-2 



Calabar ... 



1)2 



89 



82 



92 



93 



92 



89 



— 



90 



72 



_ 



90 



88-1 



Forcados ... 



86 



83 



74 



85 



87 



93 



88 



— 



95 



80 



80 



80 



84-6 



Akassa 



73 



90 



76 



75 



76 



73 



80 



80 



80 



85 



85 



80 



79-4 



Bonny 



89 



93 



— 



100 



91 



92 



88 



87 



85 



89 



90 



95 



90-8 



Sapele 



88 



86 



79 



71 



90 



65? 



90 



91 



59 



85 



90 



94 



82-3 



Warri 



88 



— 



88 



90 



64 



71 



92 



, — 



94 



85 



85 



94 



85-1 



Owerri 



87 



73 



66 



76 



75 



83 



82 



90 



75 



80 



80 



— 



78-8 



Opobo 



91 



— 



81 



78 



33? 



89 



87 



78 



80 



95 



95 



95 



82-0 



Onitsha 



84 



83 



80 



90 



90 



87 



89 



— 



89 



89 



85 



89 



86-8 



Degema ... 



87 



86 



90 



87 



83 



91 



87 



97 



85 



85 



85 



85 



87-8 



Epe 



83 



91 



84 



81 



81 



87 



93 



— 



— 



79 



85 



85 



84-9 



Abo 



83 



86 



76 



85 



83 



82 



81 



84 



80 



76 



80 



85 



81-7 



Benin City 



96 



95 



99 



96 



94 



95 



95 



— 



94 



94 



94 



89 



94-6 



Olokemeji 



75 



81 



73 



84 



83 



86 



87 



82 



89 



94 



85 



95 



84-5 



Ondo 



— 



74 



84 



59? 



— 



84 



— 



71 



84 



84 



78 



— 



77-2 



Lagos 



63 



71 



68 



73 



74 



77 



80 



82 



77 



77 



73 



74 



74-0 



Oshogbo ... 



62 



83 



68 





















71-0 



Ibadan 



75 



93 



86 



80 



92 



89 



91 



92 



94 



79 



89 



— 



87-2 



Badagri . . . 



79 



81 



— 



81 



74 



— 



78 



— 



75 



80 



80 



72 



77-7 



Abeokuta ... 



85 



90 



— 



— 



— 



94 



99 



— 



— 



— 



95 



— 



92-6 



Otta 













98 



87 



89 



79 



— 



85 



85 







87-1 



Table D gives the meau humidity for each month in 1910 at the same 

 twenty-two stations. A comparison of this table with that given for Northern 

 Nigeria* will show how much greater is the general humidity near the coast than 

 in the upland districts, for the annual means are about on a level with the average 

 annual maxima in Northern Nigeria. It is unnecessary to discuss the details, 

 but a glance will be sufficient to show that in the delta region there is very little 

 difference in humidity throughout the various months of the year, while in the 



Bull. Ent. Res. II, pt. 4, p. 312. 



