"Infinitely worse—Why, what was that?"
"It sounded very like the report of a pistol."
Both stopped, Kate coming quite close to the young man, who was bent over with his hand to his ear, trumpet-fashion.
"Do you—" He made a warning gesture with his hand, and motioned her to stoop among the ferns. A halloo was heard in the distance; then a response just ahead of where the two crouched in the breast-high ferns, through which the path made by their recent footsteps led. When the echoing halloo died away, a bird in the distance seemed to catch up the refrain and dwell upon the note with an exquisite, painful melody.
"Why, it's the throat interlude in the Magic Flute! How lovely it is!" Kate whispered. "If you were my knight, I should put on you the task of caging that lovely sound for me."
The distant bird-note ceased, and then suddenly, from the bushes just ahead of them, it was caught up and answered, note for note, in a wild pibroch strain, harsher but inexpressibly moving. Jack turned to Kate, his face quite pale, and whispered:
"It in not a bird. They are negroes. I have read of these sounds. They are marauding slaves, and we must not let them see us. We must get to those thick clumps of bushes. Do you think you can remain bent until we reach them? If not, we will rest every few paces."
"Go on. I can try."
The pibroch strains still continued, rising into a mournful wail, then sinking info the soft cries of the whip-poor-will. In a few minutes the perplexed fugitives were deep in a clump of wild hawberries, invisible to any one who should pass. The strains had ceased as suddenly as they began. Then a faint hallo-o-o sounded, being answered in the bushes, as it seemed, just in front of where Jack and his companion stood; voices soon became audible farther along, ten or more paces. Motioning to Kate, Jack crept along noiselessly, and fancied he could distinguish forms through the thick screen of bushes. A voice, not a negro's, said:
"I went to the cove for you—what was the matter?"