6 
temperature is constantly high, and during the first four months of the 
year it may be very hot. The climate is then admirably suited for the 
development of mosquitoes. 
Bumba is one of the furthest north among the posts visited by the 
expedition. The seasons there are not well marked, r.iin fall-, in 
every month of the year ; perhaps the least in January and Februar\ 
At Kasongo and Cabinda the seasons are much the same .is at 
Soma, save that the ‘dry season'' is shorter and rain often falls m 
August and May.* 
When the expedition arrived at Boma the rainy season had .dread) 
set in. For the first half of the month spent there, rain fell almost 
daily, the thermometer meanwhile varying between 85° anti >°I- 
During the latter two weeks there was . . jcasional a.. 01 ' • 
and the temperature was slightly higher. 
While at Matadi there was but little rain, so that but few of those 
places were seen where rain-water collects during the wet 
orm breeding-places for mosquitoes. 
was reached the season *» »c 
were fitd t gr ° Und WaS S ° dden W ' th Waler an<i strear, 
dai y and tl ” 0 ‘" November April ran, fell almo 
da,ly and there were frequent thunderstorms. The dally tempemtu 
■ dry ed st:;. w to th 89 °t F ' ,n May ^ re 1 ,, 
collenced lhhoTS thL^nr^ **' ^ 
™ -. . ... 
r - - tt ; z:tz z .. t . 
..—°~ » '*• "■>“>' a 
szr-x 
are indebfed^/S™ a,1 ° n concerning the clinuue o! >1- n - 
: 
* . V *"''"’'' 
Commandant VeSic^fe” 1 ° f hla “«"»l°gual obaerlaUnn, ^“7," *'“ 
kasongo. a copy „ f , h „ 
