No European, unless thoroughly free from organic disease, should venture to remain longer than three or four years at Zanzibar: the same has been observed of Baghdad, and of the Euphrates valley generally. Lurking maladies will be brought to a crisis, and severe functional derangements are liable to return. The stranger is compelled to take troublesome precautions. He may bathe in cold water, sweet or salt, but he must eschew the refreshment of the morning walk: during the rains, when noxious mists overhang the land, the unpleasant afternoon is the only safe time for exercise. Flannel must always be worn despite the irritability of the ever-perspiring skin: even in the hottest weather the white cotton jackets and overalls of British India are discarded for tweeds, and for an American stuff of mixed cotton and wool. Extra warm clothing is considered necessary as long as the ‘mugginess’ of ‘msika- weather’ lasts. Sudden exposure to the sun is considered dangerous, and the carotid, jugular, and temporal arteries must be carefully protected from cold as well as from heat. Hard work, either of mind or body, is said to produce fever as surely as sitting in draughts or as wearing insufficient clothing. The charming half-hour following sunset is held dangerous, especially in hot weather; yet most tantalizing is the cool delicious interval between the burning day and the breathless night. Natives of the country rarely venture out after dark: a man found in the streets may safely be determined to be either a slave or a thief— probably both.