Again the voice of John Silence recalled me to myself.
"Hark!" he said aloud. "Hark!"
His tone galvanised me afresh. We stood listening side by side.
Far across the island, faintly sounding through the trees and brushwood, came a similar, answering cry. Shrill, yet wonderfully musical, shaking the heart with a singular wild sweetness that defies description, we heard it rise and fall upon the night air.
"It's across the lagoon," Dr. Silence cried, but this time in full tones that paid no tribute to caution. "It's Joan! She's answering him!"
Again the wonderful cry rose and fell, and that same instant the animal lowered its head, and, muzzle to earth, set off on a swift easy canter that took it off into the mist and out of our sight like a thing of wind and vision.
The doctor made a quick dash to the door of Sangree's tent, and, following close at his heels, I peered in and caught a momentary glimpse of the small, shrunken body lying upon the branches but half covered by the blankets—the cage from which most of the life, and not a little of the actual corporeal substance, had escaped into that other form of life and energy, the body of passion and desire.
By another of those swift, incalculable processes which at this stage of my apprenticeship I failed often to grasp, Dr. Silence reclosed the circle about the tent and body.
"Now it cannot return till I permit it," he said, and the next second was off at full speed into the woods, with myself close behind him. I had already had some experience of my companion's ability to run swiftly through a dense wood, and I now had the further proof of his power almost to see in the dark. For, once we left the open space about the tents, the trees seemed to absorb all the remaining vestiges of light, and I understood that special sensibility that is said to develop in the blind—the sense of obstacles.
And twice as we ran we heard the sound of that dismal howling drawing nearer and nearer to the answering faint cry from the point of the island whither we were going.