latter is increased, and, from 36 apparatus above the same being open and the ventila- with glass-covered openings. inches at the outset, passes to 40, 44, 48 inches and tor above the auditorium closed. After the sprinkling In the first test the ventilation device above the stage apparatus had been… … open, the woven curtain being lowered. After the formly as possible, and their distance apart should steam and smoke escaping through the ventilation Stage had been set on fire, tr> woven curtain was seen vary according to the load that they have to support. apertures in the stage. All open doors…
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