1 1 
this condition, so that it is probable that the males, unlike those 
of certain species of Culex, are not blood-suckers. 
On this our first visit to Wilberforce, Major Ross examined 
the blood of all the fever patients in hospital. We had brought 
with us a supply of live Anopheles from Kissy, each enclosed in a 
separate glass tube plugged with cotton wool, and a number of 
these were fed on certain patients, in whose blood fever parasites 
had been found in sufficient numbers. 
Two days later (August 19th) Major Ross dissected some of the Parasite of 
Kissy Anopheles fed at Wilberforce in the manner just described, f^e^prov 
and found attached to the stomach of one of them three quartan to develop 
i i c the Annphel 
fever parasites m the zygote stage, r rom the appearance or these f ro m Kissy 
it was clear that the stage could not have endured more than two 
days, and must therefore be the result of the feeding experiment s 
carried out on the 17th. Consequently the Anoplieles f rom Kissy 
was proved to be a malaria-carrying species. 
As a result of this discovery, Major Ross despatched the 
following cablegram to Mr. A. L. Jones, at Liverpool: — 
" Mosquito found. Ask Government to send at once man to 
continue work." This led to the despatch by the Liverpool 
School of Dr. Fielding=Ould, who landed at Freetown on 
September 15th. On our departure it was arranged that 
Dr. Ould should proceed to Accra and Lagos, for the purpose of 
investigating the relations of Anopheles to malaria at those places. 
During the next few days the rain-fall was exceedingly heavy, Further 
and greatly interfered with out-door work. Two more visits, investl g a_ 
. tions at 
however, were paid to Wilberforce, where further unsuccessful Wilberforce 
attempts were made to discover the breeding-place of the 
Anopheles. The appearance of the larva) (which, as will be 
seen subsequently, are readily distinguishable from those of 
Culex) was described to men of the 3rd West India Regiment, 
who were encouraged to search for them by the offer of a reward 
of 105. for the first specimens ; this also produced no result. At 
this time the perfect insects appeared to be diminishing in number 
in the barrack huts, and the men told us that they were much more 
troublesome some three weeks previously. It therefore seemed 
possible that all the Anopheles we caught had hatched mil a 
month earlier, and that breeding was DO longer going on. 
