"Now, my friends, one step of our work is done, one the most harrowing to ourselves. But there remains a greater task: to find out the author of all this our sorrow and to stamp him out. I have clues which we can follow; but it is a long task, and a difficult, and there is danger in it, and pain. Shall you not all help me? We have learned to believe, all of us--is it not so? And since so, do we not see our duty? Yes! And do we not promise to go on to the bitter end?"

Each in turn, we took his hand, and the promise was made. Then said the Professor as we moved off:--

"Two nights hence you shall meet with me and dine together at seven of the clock with friend John. I shall entreat two others, two that you know not as yet; and I shall be ready to all our work show and our plans unfold. Friend John, you come with me home, for I have much to consult about, and you can help me. To-night I leave for Amsterdam, but shall return to-morrow night. And then begins our great quest. But first I shall have much to say, so that you may know what is to do and to dread. Then our promise shall be made to each other anew; for there is a terrible task before us, and once our feet are on the ploughshare we must not draw back."