Below are brief particulars of the method of heating a laundry drying room 20ft. by 16 ft. by exhaust steam. A room 20ft. by 16ft. should have at least two 2 1/2 in. pipes all round, and three pipes would be desirable. A better arrangement is to put two-thirds of this quantity Of pipe in rows across the room so as to get a well-distributed heat. A drying room, to be effective, must have very free ventilation. Heated air absorbs only a certain amount of moisture. A constant change of air is, there-lure, absolutely necessary. A 21-in. exhaust service will litable, and, after passing through the drying room, it should still be capable of heating water in a tank. It will be desirable to fit a "separator" as near the engine as convenient to remove the grease vapour from the steam, otherwise it will in time collect in the heating pipes. To run this exhaust service, take it to its highest point immediately it leaves the engine - that is, high enough to allow of a fall of lin. iu 10ft. all the way to its final outlet. This is to prevent the collection of condensed water at any point.

The heating pipes in the drying room can be close down on the floor.