With an effort I turned my thoughts into the other viewpoint. This was a few square inches--a foot or two perhaps--of the rough, scuffled board flooring in the bedroom of our Maine home! It seemed, far away as I stared, that there was a great vertical slash crossing the distant horizon. A cañon deep and wide--I knew that probably it was the space between the boards of the floor. A mile or so away in another direction was a huge caldron; a circular pit a mile wide, with a broken and jagged rim. The crater of some volcano? It was in reality a broken knothole, a blemish in the rough board of the floor. We had been talking at intervals. I said once, thoughtlessly: "But, Dianne--going into your atom, would it be so very much farther than this?" She smiled. Drake exclaimed, "Don't be an ass, Frank!" Dianne said gently, "This would be just the start. I have the drug in a more powerful form." "How long a trip, Dianne? To get into your world, from ours, I mean?" "With greater intensities of the drug, Frank, we diminish much faster. The whole trip--you would call it three or four days, perhaps." Three or four days! And we had been now some five minutes! We had, all this time, been watching closely for any sign of Togaro. Dianne was sure that he had vanished somewhere near here. "But, Dianne, when he was larger than we are now," Drake objected, "Why if he ran off there"--he gestured with a sweep of his arm toward our dim horizon--"he'd be a hundred miles from here by now." She nodded. "Yes. But he would not dare move far. We would see him. But if he were hiding--" There were certainly places to hide here now. Caverns--yawning tunnel-entrances opening up everywhere. Dianne cautioned, "Watch out, Frank!" We had moved down from the ridge; to stay there would have left us stranded upon a precipitous height. Drake and Dianne seized me--I had nearly fallen as the shifting ground altered under me. We clung to a slope; slid down it. We landed, unharmed, some twenty feet down, in a bowl-like depression. It seemed now that all this area was a honeycomb. Underground passages opened here into the bowl. Tunnels. Caves, small and elongated. All this underground area a honeycomb of cells. Cellular caves of the wood structure! Drake started thoughtlessly into a dim passageway. But Dianne stopped him. "We must not separate. If you get lost--" We stood in a cave. The light was fading. The opening tunnels and expanding pits near us were dark. And it was all very silent. Our voices seemed dead and muffled. I presently became aware that the expanding movement around us had ceased. The dose of the drug we had taken had reached its limit. We were no longer diminishing. We stood, instinctively whispering. Was Togaro near here? How in all these miles of cellular caverns could we ever hope to locate him? We walked, keeping close together, through a tubelike passage; came into another cave. We had gone downward; it was even more dim in here.