Contents: Case 1. Elephantiasis arabum, affecting, in the most formidable way, the lower extremity, successfully treated by ligature of the femoral artery - Case 2. A fourth successful case of excision of the knee joint : all the functions of the limb fully preserved, with the exception of the knee being rendered firm and rigid (the perfection of cure) : no deformity whatever - Case 3. Successful excision of the entire upper jaw and palate bone, for an enormous fibro-vascular tumour : terrific intermediary hemorrhage, ligature of the internal maxillary artery, digital compression kept up continuously, night and day, for fifty-eight hours, upon unusual nutrient vessels, perfect recovery - Case 4. Successful excision of the entire upper jaw and palate bone, for a very large osteo-sarcomatous tumour : ligature of the internal maxillary artery, rapid recovery, with scarcely a trace of deformity - Case 5. A most unusual and hideous form of double hare-lip, complicated with double-fissured palate : enormously developed septum and inter-maxillary projection, all fused into a shapeless mass : operation, recovery, with scarcely any deformity