While journeying in Egypt, Mr. Lowell, from the effects of the climate, was severely attacked by intermittent, fever; but partially recovering, proceeded to Thebes, and established his temporary home on the ruins of a palace at Luxor. After examining many of its wonderful structures carved with the names and deeds of the Pharaohs, he was again prostrated by illness, and feared that he should not recover. He had thought out more details about his noble gift to the people of Boston; and, sick and among strangers, he completed in that ancient land his last will for the good of humanity. "The few sentences," says Mr. Everett, "penned with a tired hand, on the top of a palace of the Pharaohs, will do more for human improvement than, for aught that appears, was done by all of that gloomy dynasty that ever reigned." Mr. Lowell somewhat regained his health, and proceeded to Sioot, the capital of Upper Egypt, to lay in the stores needed for his journey to Nubia. While at Sioot, he saw the great caravan of Darfour in Central Africa, which comes to the Nile once in two years, and is two or three months in crossing the desert. It usually consists of about six hundred merchants, four thousand slaves, and six thousand camels laden with ivory, tamarinds, ostrich-feathers, and provisions for use on the journey. Mr. Lowell writes in his journal: "The immense number of tall and lank but powerful camels was the first object that attracted our attention in the caravan. The long and painful journey, besides killing perhaps a quarter of the original number, had reduced the remainder to the condition of skeletons, and rendered their natural ugliness still more appalling. Their skins were stretched, like moistened parchment scorched by the fire, over their strong ribs. Their eyes stood out from their shrunken foreheads; and the arched backbone of the animals rose sharp and prominent above their sides, like a butcher's cleaver. The fat that usually accompanies the middle of the backbone, and forms with it the camel's bunch, had entirely disappeared. They had occasion for it, as well as for the reservoir of water with which a bountiful nature has furnished them, to enable them to undergo the laborious journey and the painful fasts of the desert. Their sides were gored with the heavy burdens they had carried.