I dare say you have noticed that we have a complete supply in every part of the house, so that there need not be a dark corner anywhere.

This I had specially arranged.

It is worked by a set of turbines moved by the flowing and ebbing tide, after the manner of the turbines at Niagara.

I hope by this means to nullify accident and to have without fail a full supply ready at any time.

Come with me and I will explain the system of circuits, and point out to you the taps and the fuses." I could not but notice, as we went with him all over the house, how absolutely complete the system was, and how he had guarded himself against any disaster that human thought could foresee.
But out of the very completeness came a fear! In such an enterprise as ours the bounds of human thought were but narrow.