Leith's big fingers crooked ominously as he glared at Holman, but Edith Herndon prevented the conflict that was imminent.

"Mr. Holman is only concerned about our safety," she cried, stepping in front of the youngster. "He thinks that the path is dangerous for women, and it is on that account he protests."

Leith recovered his temper with an effort. "It is not dangerous," he drawled. "We will put a strong rope under the arms of each so that it will be impossible for an accident to happen. Soma will go first with one of the other boys, and they will guide every one into the opening. Once through there the path leads into a valley in the centre of the island, and the road is perfectly safe."

Edith Herndon looked at her sister as Soma unwound the strong manilla rope which he had carried from the yacht, and they exchanged glances that showed clearly the terror in which they viewed the journey across the ledge.

Leith frowned as he glanced toward the pit. The colours were fading from the brilliant sides as the sun sank lower, and the inky clouds that seemed to heave far down in its mysterious depths fought their way slowly upward as the invading sunbeams were driven out. It became more terrifying as each moment passed.

Leith seemed to recognize this, and he turned upon the Professor. "If we don't get down in half an hour we will have to postpone it till the morning," he exclaimed. "I didn't look for a hitch like this. I tell you that there is not the slightest danger, and the young ladies will be just as safe upon that ledge as they are up here."

The Professor turned to the two girls as he closed his camera. The mad hunger for notoriety evidently blinded him to the dangers which would have been perceptible at any other time, and Holman's remarks had not improved his temper.

"Come, come, Edith!" he entreated. "We must get along. You hear what Mr. Leith says? There is no danger. A rope will be put around your waist, and an accident will be impossible."

The younger girl took a glance at the terrifying abyss and shrank back to Edith's side.

"Wait till the morning," she whispered.