Paradoxical as it may sound, the great cause of disease in hot climates is _cold_.

Nothing ought more cautiously to be watched and avoided than the chills produced by draughts and dry winds; and a change of dress or position should be instantly resorted to when the warning sensation of chilliness is perceived.
_Exercise_ .-- The early morning ride, after a single cup of coffee and a biscuit on rising, and the luxury of the bath before dressing for breakfast, constitute the enjoyments of the forenoon; and a similar stroll on horseback, returning at sunset to repeat the bath[1] preparatory to the evening toilette, completes the hygienic discipline of the day.

At night the introduction of the Indian punka into bed-rooms would be valuable, a thin flannel coverlet being spread over the bed.
Nothing serves more effectually to break down an impaired constitution in the tropics than the want of timely and refreshing sleep.
[Footnote 1: "Je me souviens que les deux premieres annees que je fus en ce pais-la, j'eus deux maladies: _alors je pris la couetume de me bien laver soir et matin_, et pendant 16 ans que j'y ay demeure depuis, je n'ay pas senti le moindre mal."-- RIBEYRO, _Hist.

de l'Isle de Ceylan_, vol.v.

ch.xix.p.