CASE II. Maria ***, falling from some height, her elbow being separated from her body and directed backwards, luxated her shoulder inwardly. Several days elapsed before she received any surgical aid. She was afterwards admitted into the Hotel-Dieu, where the displacement was discovered through a very considerable swelling, which occupied the parts around the articulation of the humerus. The reduction was accomplished, and the swelling left to itself, which, far however from disappearing, with the cause that produced it, seemed to gain ground. A roller was then applied, and on the day following the tumefaction was reduced to half its former size. The same means are continued. The compression is gradually increased, and by the ninth day, the limb restored to its natural form, performs, as before, all its functions. 36. There is another accident, on which authors have dwelt a little, which was known to Avicenna, and which oftentimes fell under the notice of Desault. I allude to a paralysis of the upper extremity, the effect of compression made by the head of the bone, in inward luxations, on the nerves of the brachial plexus. This accident sometimes resists every expedient of art, as appears from the following case, collected by myself, in the Hotel-Dieu. CASE III. Maria Dougour, fell on her right side, and experienced immediately all the signs of a downward luxation. A surgeon was called, who moved the bone violently in every direction; he made no extension; he kept the patient in torture for an hour; and at the expiration of that time pronounced the luxation irreducible, because the head of the bone, instead of returning into its natural cavity, had moved inwardly. Indeed, in the midst of his unskilful efforts, a consecutive luxation inwards had succeeded to a primitive one downwards. On the same evening, an evident insensibility occurred in the part. A swelling, joined to a sense of coldness, accompanied it. On the fourth day, the paralysis was complete. On the tenth day the patient was brought to the Hotel-Dieu, where the processes of art which we shall presently describe, replaced the bone, without removing the effects of its luxation. To remedy this, irritating means were employed, simple at first, but multiplied and combined afterwards, and pushed so far as to occasion redness accompanied by small blisters. These were continued for three weeks; blistering plasters were applied; all in vain; the paralysis continued, and as long as a year afterwards the patient was still affected with it.