17 
material diminution of malarial fevers in Freetown and its 
environs. It was, therefore, some satisfaction to us to learn 
before we left, that arrangements had been made, under the 
supervision of the Assistant Colonial Surgeon, to provide for 
the destruction of Anopheles larvae in the manner indicated. 
It is possible, although, as already pointed out, not probable, possibility 
in the light of previous researches, that besides Anopheles species th:it t!l,: 
of Culex may also convey the parasites of malarial feve r s in Free- malaria may 
town. Time, however, did not permit of our making investiga- (?? carried by 
V Vulex as well 
tions upon this point ; and, moreover, it seemed to us that work a< by 
of this character fell more properly within the province of a , 
Laboratory of Preventive Medicine, which should certainly be 
established by Government in one of our West African Colonies. 
During the progress of our work I carefully collected and Collection of 
preserved specimens of all the species of Anopheles and Culex ^ ec ^ m ^J 8 ° f 
that we came across, breeding many of them from the larvae, and Culex. 
In this way I obtained some 200 examples, representing some 
ten species of Culex and two of Anopheles. Many of these species 
will, doubtless, prove to be new, and of all of them I propose to 
publish careful descriptions in a scientific journal ; these descrip- 
tions will afterwards be reproduced (if possible, accompanied by 
figures) in the form of an appendix to the report to be present ed 
to the Liverpool School. 
The Collection of Zoological Specimens other 
than Mosquitoes. 
Although our stay at Freetown lasted for nearly seven Collection of 
weeks, I was not able to devote very much time to the collection J^S^j 
of zoological specimens generally. I endeavoured to make up other than 
for this, so far as possible, by engaging a native boy to collect for m08( l ultoes - 
me daily. Unfortunately the season was very unfavourable 
for collecting, and, owing to the heavy rains, several days were 
practically wasted almost every week. However, I managed to 
bring home a fair number of specimens — chiefly insects: some 
30 specimens of millipedes, scorpions, &c., were also obtained. 
Not much could be done among the vertebrates, a- I bad n i 
chance of going up country, but a few small mammals, reptiles, &C, 
were secured. 
4 I so U 
