Mary wanted to be a nurse when she left school, but in the meantime, she joined the Red Cross and had some limited training.
She was taught that, in case of an accident - and they were plentiful in her town - she should give first aid at once and then send for a doctor.
One day, there was an accident in a busy street, and when Mary arrived soon after, she saw a man bending over a woman who had been accidentally knocked down by a car and was lying motionless in the street.
Mary ran up, pushed the man away, informed the crowd that she was a Red Cross nurse and began to help the wounded woman.
After a few minutes, the man who had been bending over the woman when Mary arrived touched her on the shoulder and said, 'When you reach the part about sending for a doctor, don't worry. I'm here already.'