Liable as all residents in the Tropics are to be attacked with fever at times and places where skilled medical assistance is not obtainable, it may be well to conclude this chapter with a few words on the treatment of the malady. This really resolves itself into the adequate administration of quinine; for provided a sufficiency of the drug can be got into the circulation, it will, I believe, always cure malaria; but it is one thing to make the sick man swallow the drug and another to secure a sufficiency of it being absorbed into the blood; and unless this takes place, the remedy can have no more effect than as much oatmeal or any other inert substance. Anyone who has suffered from a severe attack of malaria, or had the nursing of a case, must have noticed that want of power to tolerate or digest even the lightest food, is one of its most prominent symptoms. In the more virulent type of the disease, nausea and vomiting is one of its most distressing features, and are nothing more than the outward manifestations of the fact that the digestive organs have ceased to perform their functions, and this may be equally the case, even where these additional evidences of the fact are not so prominent. A little reflection will show that it is very unlikely that quinine or any other drug will be absorbed by a stomach that can no longer deal with even the lightest food, and hence it is not surprising that the severer forms of remittent fever will often resist quinine for long periods. For the same reason that quinine so often fails to do good in virulent cases, it is equally obvious that it is unlikely to do harm, and the absurd theory that “blackwater fever” is the outcome of treating malaria with quinine may now, I think, be said to be abandoned by all, save perhaps one or two of its original propounders; for though quinine appears to be of but little value in the treatment of that doubtfully malarial disease, it has now again and again been shown to occur in patients who have taken no quinine at all. It cannot, therefore, be too strongly insisted upon that, in spite of failure to produce immediate effects, the administration of quinine should be steadily persisted in, as sooner or later in almost all cases a sufficiency will be absorbed to check the disease.