Vociferation, according to Aëtius, is an exercise of the chest and the organs of speech, improving the vital heat; attenuating and strengthening the solid parts of the body. He recommends it for the cure of asthma, orthopnœa, phthisical and chronic pains of the chest, or apostemes when they burst; also, in tertian intermittents, and affections of the stomach attended with vomiting. It is unsuitable, he says, in complaints of the head. (iii, 5.) Celsus recommends loud reading for curing weakness of the stomach. (i, 8.) Galen scarcely takes any notice of vociferation, except that, in one place, he states that it exercises the chest and lungs. (De Sanit. tuendâ, ii, 11.) Avicenna, in giving an account of vociferation, follows Aëtius. He says, that it exercises the parts about the mouth and chest; and hence, that it improves the complexion. He likewise cautions us not to prolong loud enunciation, lest it occasion a rupture of the vessels. He directs us to begin moderate, and then strain the voice gradually, and afterwards to allow it to sink by degrees, (i, 3, 2.) SECT. XX.—ON LASSITUDE FROM EXERCISES. That species of lassitude called the Ulcerose is occasioned by a collection of thin and pungent superfluities in the body. In the Tensive there is scarcely any superfluity in the system, but the state of the muscles and nerves is such that they appear to be stretched. The Inflammative, in which we feel as if the parts of the body were bruised or inflamed, happens when, being much heated, the muscles attract the surrounding superfluities. There is a fourth species, occasioned by an unnatural dryness of the muscles, in which the body, when stripped naked, appears squalid and constricted, and is averse to motion. The cure of the ulcerose species consists in dispelling the superfluities by much and soft friction with plenty of oil devoid of astringency. The indication of cure in the second or tensive species is relaxation, which may be accomplished by means of little and soft friction with oil heated in the sun; by quietude and rest, by tepid baths, and remaining for a considerable time in the warm water; for, if you repeat the bath two or three times in succession, you will confer so much the greater benefit. In the third species, or the inflammative, there are three indications of cure: the discharge of the superfluity, the relaxing of the constriction, and the cooling of the inflammatory state. Plenty of tepid oil, the softest friction, and remaining long in a bath of a moderate temperature, remove lassitudes of this description. Long-continued quietude is also proper, and repeated inunction. The treatment of the fourth differs in no respect, for the first day, from that of the third, except that the water ought to be hotter, so as to contract gently; and on the second, the restorative kind of exercise must be had recourse to; and when in the bath, let the person straightway leap into the cistern of cold water. All