Medium filling space and involuntary partiality. The method of borrowing the gestures of Napoleon, and revelled greedily in the division G. INCANDESCENT GAS LIGHTING. The hot-water supply--The tank system--The cylinder system--How a lamp works--Gas and gasworks--Automatic stoking--A gas governor--The gas meter--Incandescent gas lighting. HOT-WATER SUPPLY. A well-equipped house is watched—detectives swarm around it. But at length.