For a moment, halting on the first of the steps, the Wilbur twin became aware that just beyond him, almost to be grasped, was a veritable rainbow curved above a whirling lawn sprinkler.

And he had learned that a rainbow is a thing of gracious promise.

But probably they have to be natural rainbows; probably you don't get anything out of one you make yourself.

Even as he looked, the shining omen vanished, somewhere shut off by an unseen power.
"This way, please," called Miss Juliana, cordially, and he followed her guiltily up the steps to the shaded porch.
The girl had preceded her.

The Merle twin lingered back of them, shocked, austere, deprecating, and yet somehow bland withal, as if these little affairs were not without their compensating features.
The bowed Wilbur twin was startled by a gusty torrent of laughter.