A rich couple was going to throw a party. The local doctor, one of their friends, was invited. But when the servant brought back his reply, neither of them could read his illegible writing. "We have to know if he accepts or not." said the hostess. "If I were you" suggested her husband, "I should take it to the druggist. A pharmacist can always read doctor's letters.' The pharmacist looked at the notepaper which the hostess had handed him, and without waiting for her explanation went back to his dispensary. When he returned, on his hand was two doses of heat-clearing medicine.