From the presence of the signs formerly mentioned (43), Desault recognized the fracture, and applied the apparatus (56), notwithstanding the swelling and echymosis, persuaded that the compression made by this apparatus on the tumefied parts, was the most effectual mode to remove the enlargement. Next day, pains almost gone; swelling diminished; on the fifth day, the bandage become loose, by the almost entire disappearance of the swelling; a new application of it; the joint wet frequently with vegeto-mineral water. Seventh day, usual regimen allowed; ninth day, a slightly bilious disposition; evacuants somewhat active administered, to remove it. Thirteenth day, a third application of the apparatus; echymosis entirely gone. Thirtieth day, the consolidation complete; the apparatus laid aside; from this time motions gradually impressed on the limb. Fifty-eighth day, the patient discharged, free in all his motions, except a little stiffness, which exercise will soon remove. Since that time, it has been understood that the limb had completely recovered its natural functions. MEMOIR IX. ON THE LUXATION OF THE FORE-ARM. § I. 1. The solidity and security of joints are increased in proportion as the extent of their motions is diminished. This inverse proportion of these two properties to each other, is in a particular manner remarkable in the upper extremities, where the connexion of the humerus with the scapula, of the fore-arm with the humerus, and of the bones of the wrist among themselves, appear, in regular gradation, to acquire the one as they lose the other: hence, their predisposition to luxations is extremely different. We will examine those to which the fore-arm is subject. 2. An angular ginglymus unites to the humerus the bones of the fore-arm, which are again connected with each other by a double lateral ginglymus. Eminences and depressions, reciprocally receiving and received, constitute the first kind of articulation, where, proceeding from without inwardly, we find, 1st, the small head of the humerus, entering or rather joining the upper articular cavity of the radius, which moves on it: 2dly, the external groove of the humerus, receiving the rim of the same cavity of the radius: 3dly, a projection which, rising from the external edge of the coronoide[19] cavity, extends to the corresponding edge of that of the olecranon, and is received into the external depression of the sigmoid cavity:[20] 4thly, the large groove of the humerus, receiving the middle eminence of this same cavity: 5thly, a considerable projection, obliquely applied to the internal depression which receives it. [19] Not generally named in English works of anatomy. [20] _Echancrure sigmoide._