For a number of months all our men, except two, took quinine regularly every morning.

The fever some times attacked the believers in quinine, while the unbelievers in its prophylactic powers escaped.
Whether we took it daily, or omitted it altogether for months, made no difference; the fever was impartial, and seized us on the days of quinine as regularly and as severely as when it remained undisturbed in the medicine chest, and we finally abandoned the use of it as a prophylactic altogether.

The best preventive against fever is plenty of interesting work to do, and abundance of wholesome food to eat.

To a man well housed and clothed, who enjoys these advantages, the fever at Tette will not prove a more formidable enemy than a common cold; but let one of these be wanting--let him be indolent, or guilty of excesses in eating or drinking, or have poor, scanty fare,--and the fever will probably become a more serious matter.

It is of a milder type at Tette than at Quillimane or on the low sea-coast; and, as in this part of Africa one is as liable to fever as to colds in England, it would be advisable for strangers always to hasten from the coast to the high lands, in order that when the seizure does take place, it may be of the mildest type.
Although quinine was not found to be a preventive, except possibly in the way of acting as a tonic, and rendering the system more able to resist the influence of malaria, it was found invaluable in the cure of the complaint, as soon as pains in the back, sore bones, headache, yawning, quick and sometimes intermittent pulse, noticeable pulsations of the jugulars, with suffused eyes, hot skin, and foul tongue, began.