After tea we were amply compensated for the discomforts of the day by the delights of a tropical evening. The air was deliciously cool, and the soft tints of sunset coloured all the landscape. Everyone recovered his temper, and such pleasures and duties of social life as survived in the desert occupied our attention from this hour till bedtime. Men dropped in to see each other all over the camp, and there was a general atmosphere of "Have a drink, old chap." The amount of fluid one can consume in these tropical regions is amazing. Nobody, of course, who has any common sense thinks of drinking much alcohol in the heat of the day. Lime juice and soda is often taken at lunch, while some claret or sauterne, or a whisky and Rosbach, are common beverages in the evening. It is often very difficult indeed--especially when one is on the march--to keep such luxuries cool, but the ingenious "sparklets," which were brought out to the Sudan in thousands, will always, if fairly good water can be got, provide one with a decent drink, as the sudden liberation of the compressed gas cools the water as well as aërates it. It is worth while being really thirsty and hungry to understand the pleasures of drink and food. Our English meals follow each other with such regularity and diversity that one seldom realises what it means to crave for food and drink as a primary instinct. But oh! the joy of a deep draught of cool water after long hours of abstention in the desert, or, what is almost as bad, a long course of brackish water--saline water, which quenches one's thirst for the moment only to increase it by the after-taste. Once when I was travelling with Mr. Bent, I remember how I was walking in a stony ravine after six days of nothing but brackish water; suddenly, to my delighted vision, a little brook of limpid water appeared running down to the sea. One threw oneself flat upon the bank and drank, and drank, and drank! Hunger is much more easily endured than thirst, and Æschylus did well to class amongst the most joyful of human experiences the sight of running water to a thirsty traveller-- ὁδοιπόρῳ διψῶντι πηγαῖον ῥέος. At the same time, indiscriminate drinking is a tiresome habit, which can be shaken off with a little practice and determination. The inexperienced traveller in the East always carries a huge water-bottle, from which he is continually drinking copious draughts; but after a few months he learns to drink at meal times, and not to encumber himself with his water-bottle on every occasion when he is away from the tent. Education and self-control go largely hand in hand. Officers stand hunger and thirst much better than the rank and file, who, in the Sudan, exercised very little self-control in the matter of drink. Whenever they could get it, the soldiers were perpetually dipping their tin mugs in the large "zias" or "fantasias" provided for their use.