 What do you think is the most common cause of outbreaks of fire? I'll give you about ten seconds to figure it out. You know about the hazards of rubbish in the cellar, faults in the electrical equipment, grease-catching fire in the kitchen. But the most common hazard of all, have you figured it out, is matches. That's right, common, ordinary matches, usually in connection with smoking. That's the chief cause of destructive fires. So keep it in mind and be careful.