14a History of Gutia-Percha Willie present; he raised the sluice and let the water escape again below. It was plain, from the force with which the water struck the vault, that it would yet rise much higher. He scrambled now on the top of the vault, and, examining the ruins, soon saw how a pipe brought up through the breach in the vault could be led to the hole in the wall of his room which he had shown his father as a ventilator. But he would not have a close pipe running through his room. There would be little good in that. He could have made a hole in it, with a stopper, to let the water out when he wanted to use it, but that would be awkward, while all the pleasure lay in seeing the water as it ran. Therefore he got Mr Spelman to find him a long small pine tree, which he first sawed in two, lengthways, and hollowed into two troughs; then, by laying the small end of one into the wide end of the other, he had a spout long enough to reach across the room, and go through the wall on both sides. The chief difficulty was to pierce the other wall, for the mortar was very hard. The stones, how- ever, just there were not very large, and, with Sandy’s help, he managed it. The large end of one trough was put through the ventilator-hole, and the small end of the other through the hole opposite; their second ends met in the middle, the one lying into the