Evening came on--the warm, dark, mysterious night. Off there in the shallows gradually arose the million-voiced chorus of frogs, shrill and monotonous, plaintive, appealing--the cry of new life to the overarching, implacable mystery of the universe. The first faint silvery powder of the stars came spangling out along the horizon.

Unsteady bats began to reel across the sky. The solemn beauty of the scene awed the woman and the man to silence. But Stern, leaning his back against the bole of the great oak, encircled Beatrice with his arm.

Her beautiful dear head rested in the hollow of his throat; her warm, fragrant hair caressed his cheek; he felt the wholesome strength and sweetness of this woman whom he loved; and in his eyes--unseen by her--tears welled and gleamed in the firelight.

Beatrice watched, like a contented child, the dancing showers of sparks that rose, wavering and whirling in complex sarabands--sparks red as pa.s.sion, golden as the unknown future of their dreams. From the river they heard the gentle lap-lap-lapping of the waves along the sh.o.r.e. All was rest and peace and beauty; this was Eden once again--and there was no serpent to enter in.

Presently Stern spoke.

"Dear," said he, "do you know, I'm a bit puzzled in some ways, about--well, about night and day, and temperature, and gravitation, and a number of little things like that. Puzzled. We're facing problems here that we don't realize fully as yet."

"Problems? What problems, except to make our home, and--and live?"

"No, there's more to be considered than just that. In the first place, although I have no timepiece, I'm moderately certain the day and night are shorter now than they used to be before the smash-up. There must be a difference of at least half an hour. Just as soon as I can get around to it, I'll build a clock, and see. Though if the force of gravity has changed, too, that, of course, will change the time of vibration of any pendulum, and so of course will invalidate my results. It's a hard problem, right enough."

"You think gravitation has changed?"

"Don't you notice, yourself, that things seem a trifle lighter--things that used to be heavy to lift are now comparatively easy?"

"M-m-m-m-m--I don't know. I thought maybe it was because I was feeling so much stronger, with this new kind of outdoor life."

"Of course, that's worth considering," answered Stern, "but there's more in it than that. The world is certainly smaller than it was, though how, or why, I can't say. Things are lighter, and the time of rotation is shorter. Another thing, the pole-star is certainly five degrees out of place. The axis of the earth has been given an astonishing twist, some way or other.

"And don't you notice a distinct change in the climate? In the old days there were none of these huge, palm-like ferns growing in this part of the world. We had no such gorgeous b.u.t.terflies. And look at the new varieties of flowers--and the breadfruit, or whatever it is, growing on the banks of the Hudson in the early part of June!

"Something, I tell you, has happened to the earth, in all these centuries; something big! Maybe the cause of it all was the original catastrophe; who knows? It's up to us to find out. We've got more to do than make our home, and live, and hunt for other people--if any are still alive. We've got to solve these world--problems; we've got work to do, little girl. Work--big work!"

"Well, you've got to rest _now_, anyhow," she dictated. "Now, stop thinking and planning, and just rest! Till your wound is healed, you're going to keep good and quiet."

Silence fell again between them. Then, as the east brightened with the approach of the moon, she sang the song he loved best--"Ave Maria, Gratia Plena"--in her soft, sweet voice, untrained, unspoiled by false conventions. And Stern, listening, forgot his problems and his plans; peace came to his soul, and rest and joy.

The song ended. And now the moon, with a silent majesty that shamed human speech, slid her bright silver plate up behind the fret of trees on the far hills. Across the river a shimmering path of light grew, broadening; and the world beamed in holy beauty, as on the primal night.

And their souls drank that beauty. They were glad, as never yet. At last Stern spoke.

"It's more like a dream than a reality, isn't it?" said he. "Too wonderful to be true. Makes me think of Alfred de Musset's 'Lucie.'

You remember the poem?

"'Un soir, nous etions seuls, J'etais a.s.sis pres d'elle . ..'"

Beatrice nodded.

"Yes, I know!" she whispered. "How could I forget it? And to think that for a thousand years the moon's been shining just the same, and n.o.body--"

"Yes, but _is_ it the same?" interrupted Stern suddenly, his practical turn of mind always rea.s.serting itself. "Don't you see a difference?

You remember the old-time face in the moon, of course. Where is it now? The moon always presented only one side, the same side, to us in the old days. How about it now? If I'm not mistaken, things have shifted up there. We're looking now at some other face of it. And if that's so it means a far bigger disarrangement of the solar system and the earth's...o...b..t and lots of things than you or I suspect!

"Wait till we get back to New York for half a day, and visit the tower and gather up our things. Wait till I get hold of my binoculars again!

Perhaps some of these questions may be resolved. We can't go on this way, surrounded by perpetual puzzles, problems, mysteries! We must--"

"Do nothing but rest now!" she dictated with mock severity.

Stern laughed.

"Well, you're the boss," he answered, and leaned back against the oak.

"Only, may I propound one more question?"

"Well, what is it?"

"Do you see that dark patch in the sky? Sort of a roughly circular hole in the blue, as it were--right there?" He pointed. "Where there aren't any stars?"

"Why--yes. What about it?"

"It's moving, that's all. Every night that black patch moves among the stars, and cuts their light off; and one night it grazed the moon--pa.s.sed before the eastern limb of it, you understand. Made a partial eclipse. You were asleep; I didn't bother you about it. But if there's a new body in the sky, it's up to us to know why, and what about it, and all. So the quicker--"

"The quicker you get well, the better all around!"

She drew his head down and kissed him tenderly on the forehead with that strange, innate maternal instinct which makes women love to "mother" men even ten years older than themselves.

"Don't you worry your brains about all these problems and vexations to-night, Allan. Your getting well is the main thing. The whole world's future hangs on just that! Do you realize what it means? Do you?"

"Yes, as far as the human brain _can_ realize so big a concept.

Languages, arts, science, all must be handed down to the race by us.

The world can't begin again on any higher plane than just the level of our collective intelligence. All that the world knows to-day is stored in your brain-cells and mine! And our speech, our methods, our ideals, will shape the whole destiny of the earth. Our ideals! We must keep them very pure!"

"Pure and unspotted," she answered simply. Then with an adorable and feminine anticlimax:

"Dear, does your shoulder pain you now? I'm awfully heavy to be leaning on you like this!"

"You're not hurting me a bit. On the contrary, your touch, your presence, are life to me!"

"Quite sure you're comfy, boy?"

"Positive."

"And happy?"

"To the limit."

"I'm so glad. Because I am, too. I'm awfully sleepy, Allan. Do you mind if I take just a little, tiny nap?"

For all answer he patted her, and smoothed her hair, her cheek, her full, warm throat.

Presently by her slow, gentle breathing he knew she was asleep.

For a long time he half-lay there against the oak, softly swathed in his bear-skin, on the odorous bed of fir, holding her in his arms, looking into the dancing firelight.

And night wore on, calm, perfumed, gentle; and the thoughts of the man were long, long thoughts--thoughts "that do often lie too deep for tears."