"...He went to Scotland and studied under Lister...("Lister was persecuted by the British Medical Association. He was threatened with having his license revoked.") Yet in Lister's hospital virtually no one died as a result of operations because Lister had developed a carbolic acid wash and disinfectant. Dr. Keen came back from Scotland...He was referred to as a crazy Listerite.....He was denied an opportunity to practice in every hospital in Philadelphia."