CORRESPONDENCE. PRIZE FOR PORTABLE FIRE ESCAPE. FIRE AND WATER ENGINEERING. We have received your address from J. C. Broderick, chief of the fire department, at Detroit, in reference to a news item that he thinks you would he pleased to publish, referring to a prize that is being offered by the Commercial Travelers’ Association and the exhibition people of the city of Toronto for a fire escape appliance suitable for use by individuals without experience from ordinary rooms in hotels. The prize offered is $100 for the best fire escape to be exhibited on ,he exhibition grounds on Saturday, September 4, in the city of Toronto, to be demonstrated by the exhibitor from a steel tower from a height of a three-story hotel. If you could give this item in your valuable periodical the commercial travelers of Canada will be obliged, and I would be pleased to see a copy…