The recent articles of Brown and Coffee, and of Muller., have given added interest to, as well as a summary of, our present knowledge of the control of the sympathetic over the vascular system. The barrenness of the literature on this subject justifies another case report with some remarks on the technic and regional anatomy of this operation. REPORT OF CASE G. J., a man, aged 78, a cement worker, born in Germany, who had three healthy adult children over 50, whose father died of cancer at 84, and whose mother died of nephritis at 30, had always been robust. He always had chronic bronchitis, which he believed followed an attack of malaria in childhood. He was a moderate drinker and a very hard worker. About three years ago, while climbing a hill, he was suddenly seized with a heavy feeling in the chest, over the precordium, which quickly disappeared