And this was a very cunning thing to have with me, if but it held service to the Earth-Current, and a rare thing, which the Master Monstruwacan did make with his own hands and much skill and pains, from an olden one that had place within the Great Museum, and concerning which I have told somewhat, before this place. And I set the thing upon the ground; but it had no certain way with it; but did spin and waver constantly, and this I made to consider, and remembered that I was yet above that part where, afar in the earth did spread the greatness of the Underground Fields; and I was, haply, but a little way off from the "Crack"; though a mighty way above. And it pleasured me to wonder whether the dear Master Monstruwacan did behold how that I made test with the compass; for the light was good from the fire-hole; and the Great Spy-Glass had a great strength. Yet, had I no certainty; for, as I did know, from much watchings, there was no surety in the searching of the Land, by the Glass; for there was oft plainness where you did think surely none should see, and anon a dullness where might be thought that the sight went gaily. And this may be plain to all; for the wavering of the lights from the strange fires was not to be accounted to rule; but made a light here, and a darkness there, and then did change about, oddly. Moreover, there were smokes and mists that did come upwards from the earth, in this place and in that; and had somewhiles a greatness; but oft were small, and did lurk low, and had no power but to confuse the sight. And, presently, I did put by the compass in my pouch, and made to compose myself unto sleep. But here would I now set down how that, in the end, after I had gone many days' journeyings outward from the Mighty Pyramid, I did indeed find it to draw the Northward part of the needle unto it; and this was a comfort and a pleasure to my spirit; moreover, if ever I did get back, as I did think, it would be a matter for great interest unto the Master Monstruwacan; yet, in verity, were there other matters that should hold him more; for he was right human, as all should know.