After the water leaves the condenser it is still warm, so it is made to pass through another series of parallel pipes. Over these pipes a spray of cold water is kept playing, which still further cools this distilled water on its way to the filters shown in the next illustration. In making artificial ice the greatest care is taken to secure pure water. Before it is even distilled in the condensing system this water is boiled and then allowed to stand so that the impurities may settle. It is then drawn off from this settling tank, converted into steam and condensed.