Dr. Marion Thomas Jenkins, 77, the Texas...

Dr. Marion Thomas Jenkins, 77, the Texas anesthesiologist who tried to resuscitate President John F. Kennedy and his assassin, Lee Harvey Oswald, 31 years ago, died Monday at his home in Dallas of stomach cancer. He and a colleague devised a procedure used every day in operating rooms when they found that by giving an intravenous saline solution to surgical patients with strong blood pressure and pulse, the need for a blood transfusion was reduced.