16 
puddle and ditch containing an Anopheles larva was marked down 
on the plan in red ink. It is only fair to add that the bulk 
of this work fell upon Dr. Annett, Major Ross's time and my 
own being chiefly taken up with continuing the investigations at 
Wilberforce. 
As our work progressed, we took care, by means of informal 
communications, to keep the Acting-Governor constantly in- 
formed of the results that were being obtained. Shortly before 
the end of our stay the Acting-Governor, who evinced through- 
out a keen interest in our proceedings, asked us to furnish him 
with a formal statement, showing how, in our opinion, based upon 
our investigations, malarial fever in Freetown might be 
materially lessened — (a) at a minimum of cost, (/3) without 
regard to expenditure. According we drew up and forwarded 
to his Excellency, a few days before our departure, a joint 
report, containing a detailed account of our proceedings, and 
embodying our recommendations as requested ; this report was 
accompanied by a copy of the plan of the breeding-places of 
AnopJieles, alluded to above. 
It seems unnecessary for me to give here a statement of 
the conclusions and recommendations contained in this document, 
since it will practically be embodied in a joint report by the 
members of the expedition, which will shortly be furnished 
to the Committee of the Liverpool School of Tropical Diseases, 
with a view to publication. It is enough to say that we insisted 
chiefly upon the necessity for the universal use of mosquito-nets 
(and other simple appliances) in dwelling-places and hospitals, in 
order to prevent AnopJieles from biting either healthy people or 
patients suffering from fever, and for the appointment by the 
Sanitary Authorities of responsible officials whose duty it would 
be to provide for the systematic and constant application of 
kerosene oil to the breeding-places. 
Simple, and indeed, obvious, though these recommendations 
may seem at home, even a slight experience of life in the tropics 
will suggest more than one practical difficulty in the way of 
carrying them out. But it was the firm conviction of all the 
members of the expedition that the methods suggested, if only 
given a fair trial, would undoubtedly result in at any rate a 
