mistaken, Taylor," smiled Mercer. "That is not solid metal, you see. And it is an aluminum alloy that is not nearly as heavy as it looks. There are two walls, slightly over an inch apart, braced by innumerable trusses. The fabric is nearly as strong as that much solid metal, and infinitely lighter. They work all right, Taylor. I know, because I've tried them."
"And this hump on the back?" I asked, walking around the odd, dangling figures, hanging like bloated metal skeletons from their chains. I had thought the bodies were perfect globes; I could see now that at the rear there was a humplike excrescence across the shoulders.
"Air," explained Mercer. "There are two other tanks inside the globular body. That shape was adopted, by the way, because a globe can withstand more pressure than any other shape. And we may have to go where pressures are high."
"And so," I said, "we don these things and stroll out into the Atlantic looking for the girl and her friends?"
"Hardly. They're not quite the apparel for so long a stroll. You haven't seen all the marvels yet. Come along!"
He led the way through the patio, beside the pool in which our strange visitor from the depths had lived during her brief stay with us, and out into the open again. As we neared the sea, I became aware, for the first time, of a faint, muffled hammering sound, and I glanced at Mercer inquiringly.
"Just a second," he smiled. "Then – there she is, Taylor!"
I stood still and stared. In a little cove, cradled in a cunning, spidery structure of wood, a submarine rested upon the ways.
"Good Lord!" I exclaimed. "You're going into this right, Mercer!"
"Yes. Because I think it's immensely worth while. But come along and let me show you the Santa Maria– named after the flagship of Columbus' little fleet. Come on!"
Two men with army automatics strapped significantly to their belts nodded courteously as we came up. They were the only men in sight, but from the hammering going on inside there must have been quite a sizeable crew busy in the interior. A couple of raw pine shacks, some little distance away, provided quarters for, I judged, twenty or thirty men.
"Had her shipped down in pieces," explained Mercer. "The boat that brought it lay to off shore and we lightered the parts ashore. A tremendous job. But she'll be ready for the water in a week; ten days at the latest."
"You're a wonder," I said, and I meant it.
Mercer patted the red-leaded side of the submarine affectionately. "Later," he said, "I'll take you inside, but they're busy as the devil in there, and the sound of the hammers fairly makes your head ring. You'll see it all later, anyway – if you feel you'd like to share the adventure with me?"
"Listen," I grinned as we turned back towards the house, "it'll take more than those two lads with the pop-guns to keep me out of the Santa Maria when she sails – or dives, or whatever it is she's supposed to do!"
Mercer laughed softly, and we walked the rest of the way in silence. I imagine we were both pretty busy with our thoughts; I know that I was. And several times, as we walked along, I looked back over my shoulder towards the ungainly red monster straddling on her spindling wooden legs – and towards the smiling Atlantic, glistening serenely in the sun.
Mercer was so busy with a thousand and one details that I found myself very much in the way if I followed him around, so I decided to loaf.
For weeks after we had put our strange girl visitor back into the sea from whence Mercer had taken her, I had watched from a comfortable seat well above the high-water mark that commanded that section of shore. For I had felt sure by that last strange gesture of hers that she meant to return.
I located my old seat, and I found that it had been used a great deal since I had left it. There were whole winnows of cigarette butts, some of them quite fresh, all around. Mercer, cold-blooded scientist as he was, had hoped against hope that she would return too.
It was a very comfortable seat, in the shade of a little cluster of palms, and for the next several days I spent most of my time there, reading and smoking – and watching. No matter how interesting the book, I found myself, every few seconds, lifting my eyes to search the beach and the sea.
I am not sure, but I think it was the eighth day after my arrival that I looked up and saw, for the first time, something besides the smiling beach and the ceaseless procession of incoming rollers. For an instant I doubted what I saw; then, with a cry that stuck in my throat, I dropped my book unheeded to the sand and raced towards the shore.
She was there! White and slim, her pale gold hair clinging to her body and gleaming like polished metal in the sun, she stood for a moment, while the spray frothed at her thighs. Behind her, crouching below the surface, I could distinguish two other forms. She had returned, and not alone!
One long, slim arm shot out toward me, held level with the shoulder: the well-remembered gesture of greeting. Then she too crouched below the surface that she might breathe.
As I ran out onto the wet sand, the waves splashing around my ankles all unheeded, she rose again, and now I could see her lovely smile, and her dark, glowing eyes. I was babbling – I do not know what. Before I could reach her, she smiled and sank again below the surface.
I waded on out, laughing excitedly, and as I came close to her, she bobbed up again out of the spray, and we greeted each other in the manner of her people, hands outstretched, each gripping the shoulder of the other.
She made a quick motion then, with both hands, as though she placed a cap upon the shining glory of her head, and I understood in an instant what she wished: the antenna of Mercer's thought-telegraph, by the aid of which she had told us the story of herself and her people.
I nodded and smiled, and pointed to the spot where she stood, trying to show her by my expression that I understood, and by my gesture, that she was to wait here for me. She smiled and nodded in return, and crouched again below the surface of the heaving sea.
As I turned toward the beach, I caught a momentary glimpse of the two who had come with her. They were a man and a woman, watching me with wide, half-curious, half-frightened eyes. I recognized them instantly from the picture she had impressed upon my mind nearly a year ago. She had brought with her on her journey her mother and her father.
Stumbling, my legs shaking with excitement, I ran through the water. With my wet trousers flapping against my ankles, I sprinted towards the house.
I found Mercer in the laboratory. He looked up as I came rushing in, wet from the shoulders down, and I saw his eyes grow suddenly wide.
I opened my mouth to speak, but I was breathless. And Mercer took the words from my mouth before I could utter them.
"She's come back!" he cried. "She's come back! Taylor – she has?" He gripped me, his fingers like steel clamps, shaking me with his amazing strength.
"Yes." I found my breath and my voice at the same instant. "She's there, just where we put her into the sea, and there are two others with her – her mother and her father. Come on, Mercer, and bring your thought gadget!"
"I can't!" he groaned. "I've built an improvement on it into the diving armor, and a central instrument on the sub, but the old apparatus is strewn all over the table, here, just as it was when we used it the other time. We'll have to bring her here."
"Get a basin, then!" I said. "We'll carry her back to the pool just as we took her from it. Hurry!"
And we did just that. Mercer snatched up a huge glass basin used in his chemistry experiments, and we raced down to the shore. As well as we could we explained our wishes, and she smiled her quick smile of understanding. Crouching beneath the water, she turned to her companions, and I could see her throat move as she spoke to them. They seemed to protest, dubious and frightened, but in the end she seemed to reassure them, and we picked her up, swathed in her hair as in a silken gown, and carried her, her head immersed in the basin of water, that she might