He plunged across the Promenade, leaving Selden to a meditative cigar.
The conclusions it led him to were fortified, later in the evening, by some of those faint corroborative hints that generate a light of their own in the dusk of a doubting mind.

Selden, stumbling on a chance acquaintance, had dined with him, and adjourned, still in his company, to the brightly lit Promenade, where a line of crowded stands commanded the glittering darkness of the waters.

The night was soft and persuasive.
Overhead hung a summer sky furrowed with the rush of rockets; and from the east a late moon, pushing up beyond the lofty bend of the coast, sent across the bay a shaft of brightness which paled to ashes in the red glitter of the illuminated boats.

Down the lantern-hung Promenade, snatches of band-music floated above the hum of the crowd and the soft tossing of boughs in dusky gardens; and between these gardens and the backs of the stands there flowed a stream of people in whom the vociferous carnival mood seemed tempered by the growing languor of the season.
Selden and his companion, unable to get seats on one of the stands facing the bay, had wandered for a while with the throng, and then found a point of vantage on a high garden-parapet above the Promenade.

Thence they caught but a triangular glimpse of the water, and of the flashing play of boats across its surface; but the crowd in the street was under their immediate view, and seemed to Selden, on the whole, of more interest than the show itself.