The casement that had been opened was that which belonged to the bed-chamber of his cousin Louise. He knew it. The lady herself was standing outside upon the steps that led to the level of the garden, her face turned downward, as if she was meditating a descent.

Loosely attired in white, as though in the negligé of a robe de chambre, with only a small kerchief coifed over her crown, she resembled some fair nymph of the night, some daughter of the moon, whom Luna delighted to surround with a silvery effulgence!

Calhoun reasoned rapidly. He could not do otherwise than connect her appearance outside the casement with the advent of the man who was making his way across the river.

And who could this man be? Who but Maurice the mustanger?

A clandestine meeting! And by appointment!

There could be no doubt of it; and if there had, it would have been dissolved, at seeing the white-robed figure glide noiselessly down the stone steps, and along the gravelled walks, till it at length disappeared among the trees that shadowed the mooring-place of the skiff.

Like one paralysed with a powerful stroke, the ex-captain continued for some time upon the azotea—speechless and without motion. It was only after the white drapery had disappeared, and he heard the low murmur of voices rising from among the trees, that he was stimulated to resolve upon some course of proceeding.

He thought no longer of awaking the inmates of the house—at least not then. Better first to be himself the sole witness of his cousin’s disgrace; and then—and then—

In short, he was not in a state of mind to form any definite plan; and, acting solely under the blind stimulus of a fell instinct, he hurried down the escalera, and made his way through the house, and out into the garden.

He felt feeble as he pressed forward. His legs had tottered under him while descending the stone steps. They did the same as he glided along the gravelled walk. They continued to tremble as he crouched behind the tree trunk that hindered him from being seen—while playing spectator of a scene that afflicted him to the utmost depths of his soul.