Mr. SPECTER. And what action, if any, did you take as a result of receiving that notification? Dr. CLARK. I went immediately to the emergency room at Parkland Hospital. I was in the laboratory at Southwestern Medical School when this word reached me by phone from the hospital. Mr. SPECTER. And at approximately what time did you then arrive at the emergency room? Dr. CLARK. I would estimate it took a minute and a half to two minutes, so I would guess that I arrived approximately 12:30. Mr. SPECTER. And who was present, if anyone, upon your arrival, attending to the President? Dr. CLARK. Dr. Jenkins, that is M. T. Jenkins, I suppose I ought to say, Dr. Ronald Jones, Dr. Malcolm Perry, Dr. James Carrico; arriving either with me or immediately thereafter were Dr. Robert McClelland, Dr. Paul Peters, and Dr. Charles Baxter. Mr. SPECTER. What did you observe the President's condition to be on your arrival there? Dr. CLARK. The President was lying on his back on the emergency cart. Dr. Perry was performing a tracheotomy. There were chest tubes being inserted. Dr. Jenkins was assisting the President's respirations through a tube in his trachea. Dr. Jones and Dr. Carrico were administering fluids and blood intravenously. The President was making a few spasmodic respiratory efforts. I assisted in withdrawing the endotracheal tube from the throat as Dr. Perry was then ready to insert the tracheotomy tube. I then examined the President briefly. My findings showed his pupils were widely dilated, did not react to light, and his eyes were deviated outward with a slight skew deviation. I then examined the wound in the back of the President's head. This was a large, gaping wound in the right posterior part, with cerebral and cerebellar tissue being damaged and exposed. There was considerable blood loss evident on the carriage, the floor, and the clothing of some of the people present. I would estimate 1,500 cc. of blood being present. As I was examining the President's wound, I felt for a carotid pulse and felt none. Therefore, I began external cardiac massage and asked that a cardiotachioscope be connected. Because of my position it was difficult to administer cardiac massage. However, Dr. Jones stated that he felt a femoral pulse. Mr. SPECTER. What is a femoral pulse? Dr. CLARK. A femoral artery is the main artery going to the legs, and at the junction of the leg and the trunk you can feel the arterial pulsation in this artery. Because of my position, cardiac massage was taken over by Dr. Malcolm Perry, who was more advantageously situated. Mr. SPECTER. What did the cardiotachioscope show at that time? Dr. CLARK. By this time the cardiotachioscope, we just call it a cardiac monitor for a better word---- Mr. SPECTER. That's a good word.