20 THE BOILING SPRINGS. it must be one of the greatest curiosi- ties in the world. Why, just think of ‘+t. Here is a column of water almost as large as the room in which you are sitting, which is sent up, with a roar- ing sound, higher than the ridge-pole of a three-story house. As this column of water rises, it carries a vast cloud of vapor along with it. Large stones are often thrown up in this vast column. Sometimes visitors throw stones into the spring, to see them go up in the air. It now and then happens, that stones will remain near the top of the column of water,