Sometimes this fever is preceded by a violent shaking fit, during which period blankets may be heaped on the patient's form, with but little amelioration of the deadly chill he feels. It is then succeeded by an unusually severe headache, with excessive pains about the loins and spinal column, which presently will spread over the shoulder-blades, and, running up the neck, find a final lodgment in the back and front of the head. Usually, however, the fever is not preceded by a chill, but after languor and torpitude have seized him, with excessive heat and throbbing temples, the loin and spinal column ache, and raging thirst soon possesses him. The brain becomes crowded with strange fancies, which sometimes assume most hideous shapes. Before the darkened vision of the suffering man, float in a seething atmosphere, figures of created and uncreated reptiles, which are metamorphosed every instant into stranger shapes and designs, growing every moment more confused, more complicated, more hideous and terrible. Unable to bear longer the distracting scene, he makes an effort and opens, his eyes, and dissolves the delirious dream, only, however, to glide again unconsciously into another dream-land where another unreal inferno is dioramically revealed, and new agonies suffered. Oh! the many many hours, that I have groaned under the terrible incubi which the fits of real delirium evoke. Oh! the racking anguish of body that a traveller in Africa must undergo! Oh! the spite, the fretfulness, the vexation which the horrible phantasmagoria of diabolisms induce! The utmost patience fails to appease, the most industrious attendance fails to gratify, the deepest humility displeases. During these terrible transitions, which induce fierce distraction, Job himself would become irritable, insanely furious, and choleric. A man in such a state regards himself as the focus of all miseries. When recovered, he feels chastened, becomes urbane and ludicrously amiable, he conjures up fictitious delights from all things which, but yesterday, possessed for him such awful portentous aspects. His men he regards with love and friendship; whatever is trite he views with ecstasy. Nature appears charming; in the dead woods and monotonous forest his mind becomes overwhelmed with delight. I speak for myself, as a careful analysation of the attack, in all its severe, plaintive, and silly phases, appeared to me. I used to amuse myself with taking notes of the humorous and the terrible, the fantastic and exaggerated pictures that were presented to me--even while suffering the paroxysms induced by fever. We arrived at a large pool, known as the Ziwani, after a four hours' march in a S.S.W. direction, the 1st of October. We discovered an old half-burnt khambi, sheltered by a magnificent mkuyu (sycamore), the giant of the forests of Unyamwezi, which after an hour we transformed into a splendid camp.