“Tomorrow at midnight,” said the first who appeared to be in authority. “When the whippoorwill calls three times.”

“It is well,” returned the other. “Shall I tell Brother Drebber?”

“Pass it on to him, and from him to the others. Nine to seven!”

“Seven to five!” repeated the other, and the two figures flitted away in different directions. Their concluding words had evidently been some form of sign and countersign. The instant that their footsteps had died away in the distance, Jefferson Hope sprang to his feet, and helping his companions through the gap, led the way across the fields at the top of his speed, supporting and half-carrying the girl when her strength appeared to fail her.

“Hurry on! hurry on!” he gasped from time to time. “We are through the line of sentinels. Everything depends on speed. Hurry on!”