In the evening, wound painful; pulse raised; a copious blood-letting; low diet. Next day, more blood taken away; antiphlogistic regimen, which was continued for several days, till the symptoms were gone: no troublesome accident occurred. Tenth day, the apparatus taken off; the wound partly healed; the apparatus reapplied, and continued till the twentieth day, when the perfect reunion of the parts rendered its further use unnecessary. From this time the patient began to walk on crutches. Thirty-sixth day, could walk well without his crutches. At this period, a small abscess occurring in his heel, induced him to remain in the Hotel-Dieu two weeks longer, when he was discharged perfectly cured. CASE II. M. Delp, leaping with some of his young companions, ruptured the tendo Achillis, about two inches above the os calcis. Both standing and walking became instantly impracticable: the patient falling down, was taken up, carried home, and from thence to Paris, where he arrived in the evening. Desault being immediately called to him, found him affected with all the signs of a division of the tendon; such as, a hollow between its divided ends, which was increased by the flexion of the foot, diminished by its extension, &c. The usual apparatus was immediately applied, and as the patient felt but little pain, only a moderate blood-letting was prescribed. Next day, no alteration in the treatment; antiphlogistic regimen; low diet continued for some days, when the patient was permitted to return to his usual mode of living. Ninth day, apparatus removed for the first time: a slight separation of the ends of the tendon; and a wrinkle in the skin interposed between them: a new application of the bandage, taking care to free the integuments from wrinkles. Twelfth day, a relaxation of the rollers; a third application of the bandage: every thing found in a good state; but, the patient being, from sprightliness, too much inclined to exert himself, a splint was applied anteriorly to prevent the extension of the foot. Seventeenth day, a fourth application of the apparatus, which was not moved again till the thirtieth. At this period, the reunion was somewhat advanced: fortieth day, almost complete. Fiftieth day, the patient was permitted to leave his bed, and take very gentle exercise, which he continued to increase gradually, till the sixtieth day, when he was discharged cured. Doubtless the tediousness of this case was owing to the slight separation which existed for some time between the fragments. MEMOIR XVI. ON THE FRACTURE OF THE OS CALCIS. § I.