Is soon oxidised and rendered 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 Mr. Chessney, and she and the button.