Her hand stole into his, and for a while they sat in silence, thinking the thoughts that “do sometime lie too deep for tears.”

The flaming red in the west had faded now to orange and dull umber. Higher in the sky yellows and greens gave place to blue as deep as that in the Aegean grottos. The zenith, a dark purple, began to show a silver twinkle here and there of stars.

A whirring, roaring sound grew audible to eastward. It strengthened quickly. And all at once, far above the river, a long, swift train, its windows already lighted, sped with a smooth, rapid flight.

Allan watched the monorail vanish beyond the huge north tower of the cable bridge, sink through the trees, and finally fade into the gathering gloom.

“The Great Lakes Express,” said he. “In the old days we thought seventy miles an hour something stupendous. Now two hundred is mere ordinary schedule-time. Yes--something has been accomplished even now. The greater time still to be--we can't hope to see it.

“But we can catch a glimpse of what it shall be, here and there. We must be content to have built foundations. On them those who shall come in the future shall raise a fairer and a mightier world than any we have ever dreamed.”

Again he relapsed into silence; but his arm drew round Beatrice, and together they sat watching the age-old yet ever-new drama of the birth of night.

Half heard, mingled with the eternal turmoil of the rapids, rose the far purring of the giant dynamos in the power-houses below the cliff. Here, there, lights began to gleam in the city; and on the rolling farmlands to northward, too, little winking eyes of light opened one by one, each one a home.

Suddenly the man spoke again.

“More than a hundred thousand of us already!” he exulted. “Over a tenth of a million--and every year the growth is faster, ever faster, in swift progressions. A hundred thousand English-speaking people, Beta; a civilization already, even in a material sense, superior to the old one that was swept away; in a spiritual, moral sense, how vastly far ahead!