1911 Encyclopædia Britannica/Suspensura
SUSPENSURA, the architectural term given by Vitruvius (v. 10) to the hollow space under the floor of a Roman bath, in which the smoke from the furnace passed to the vertical flues in the wall (see Hypocaust).
SUSPENSURA, the architectural term given by Vitruvius (v. 10) to the hollow space under the floor of a Roman bath, in which the smoke from the furnace passed to the vertical flues in the wall (see Hypocaust).