I was, but I was shaking a little as the men helped me into the mighty armor that was to keep the pressure of several atmospheres from crushing my body. The helmet was the last piece to be donned; when it was screwed in place I stood there like a mummy, almost completely rigid. Quickly we were put into the air lock, together with a large iron box containing a number of things Mercer needed. Darkness and water rushed in on us. The water closed over my head. I became aware of the soft, continuous popping sounds of the air-bubbles escaping from the relief valve of the head-piece. For a moment I was dizzy and more than a little nauseated. I could feel the cold sweat pricking my forehead. Then there was a sudden glow of light from before me, and I started walking towards it. I found I could walk now; not easily, but, after I caught the trick of it, without much difficulty. I could move my arms, too, and the interlocking hooks that served me for fingers. When my real fingers closed upon a little cross-bar at the end of the armored arms, and pulled the bars towards me, the steel claws outside came together, like a thumb and two fingers. * * * * * In a moment we stood upon the bottom of the ocean. I turned my head inside the helmet, and there, beside me, was the sleek, smooth side of the _Santa Maria_. On my other side was Mercer, a huge, dim figure in his diving armor. He made an awkward gesture towards his head, and I suddenly remembered something. Before me, where I could operate it with a thrusting movement of my chin, was a toggle switch. I snapped it over, and heard Mercer's voice: "--n't forget everything I tell him." "I know it," I said mentally to him. "I was rather rattled. O.K. now, however. Anything I can do?" "Yes. Help me with this box, and then get the girl to put on the antenna you'll find there. Don't forget the knife and the light." "Right!" I bent over the box with him, and we both came near falling. We opened the lid, however, and I hooked the knife and the light into their proper places outside my armor. Then, with the antenna for the girl, so that we could establish connections with her, and through her, with the villagers, I moved off. This antenna was entirely different from the one used in previous experiments. The four cross-members that clasped the head were finer, and at their junction was a flat black circular box, from which rose a black rod some six inches in height, and topped by a black sphere half the size of my fist. * * * * * These perfected thought-telegraphs (I shall continue to use my own designation for them, as clearer and more understandable than Mercer's) did not need connecting wires; they conveyed their impulses by Hertzian waves to a master receiver on the _Santa Maria_, which amplified them and re-broadcast them so that each of us could both send and receive at any time.