Distribution of Tropical Diseases in Africa. 487 
22nd days, omitting it on the 17th to the 20th day. In 
remittent fever the quinine should be given when the 
temperature falls, however small the fall may be. In 
pernicious fevers a hypodermic injection of the drug is 
indicated. I think the bisulphate of quinine, with a little 
carbolic acid, and glycerine and water, at a temperature of 
100° F., is the best solution to use for this purpose. In 
severe remittent fever I consider Warburg’s Tincture ex- 
ceedingly useful, but I invariably prescribe it in the tabloid 
form, which has been made for me by Burroughs, Wellcome, 
& Co. 
I feel that my task has been very inadequately performed, 
but I have endeavoured to do my best within the limits 
imposed on me. The diseases of Africa, and their dis- 
tribution, are represented by symbols upon the Map, which, 
if read with reference to altitude, will indicate broadly the 
unhealthy and the comparatively healthy areas of the 
continent. 
I cannot conclude without stating it to be my definite 
opinion, that as in India, so in Africa, the progress of 
medicine and hygiene will before long conquer most of the 
obstacles to the civilisation of that continent. 
