Five days had passed, and the prisoners were not sent again to the clearing, while, in spite of every effort, they found that their chances of eluding the guard set over them by night were small indeed.
Fettered by day, they were doubly chained by night. The building where they slept was strongly secured and guarded, and in spite of the newness of the settlement it was well chosen for its purpose, and stronger even than the prisoners thought.
"We shall never get away by night, Bart," said Abel, gloomily, "unless--"
He stopped and gazed meaningly at his companion.
"The knife?" responded Bart. "No, lad, we won't do that. I shouldn't like to go to Mary wet with blood."
Abel's countenance grew dark and deeply hard, for at that moment, in his despair and disappointment, he felt ready to go to any extremity, knowing, as he did, that his sister was waiting for him, holding out her hands and saying, "Come!"
Only another day, and then she would give up expecting them by night, and take to watching for them by day, when the attempt seemed hopeless.
And so it proved, for during the following week the prisoners were only once in the coffee-plantation, and so strictly watched that they felt that to attempt an evasion was only to bring destruction upon their hopes, perhaps cause Mary's imprisonment for attempting to assist prisoners to escape.
"It's of no use, Bart," said Abel at last, despondently. "Poor girl!
Why did she come?"
"Help us away," said Bart, gruffly.
"Yes, but all in vain."
"Tchah! Wait a bit."
"Do you think she will still come and wait?" said Abel, dolefully.
"Do I think th' sun 'll shine agen?" growled Bart. "Here's a fellow!
Born same time as that there lass, lived with her all his days, and then he knows so little about her that he says, 'Will she come agen?'"
"Enough to tire her out."
"Tchah!" cried Bart again, "when you know she'll keep on coming till she's an old grey-headed woman, or she gets us away."
Abel shook his head, for he was low-spirited and not convinced; but that night his heart leaped, for as he lay half asleep, listening to the thin buzzing hum of the mosquitoes which haunted the prisoners' quarters, and the slow, regular pace of the sentry on guard outside, there was the faint rattle of a chain, as if some prisoner had turned in his unquiet rest, and then all was silent again, till he started, for a rough hand was laid upon his mouth.
His first instinct was to seize the owner of that hand, to engage in a struggle for his life; but a mouth was placed directly at his ear, and a well-known voice whispered--
"Don't make a sound. Tie these bits of rag about your irons so as they don't rattle."
Abel caught at the pieces of cloth and canvas thrust into his hand, and, sitting up in the darkness, he softly bound the links and rings of his fetters together, hardly daring to breathe, and yet with his heart beating tumultuously in his anxiety to know his companion's plans.
For an attempt it must be, Abel felt, though up to the time of their going to rest after the day's work Bart had said nothing to him. He must have made a sudden discovery, and there was nothing for it but to obey in every way and trust to what was to come.
Abel felt this as he rapidly knotted the rag round his chains, and as he was tying the last knot he felt Bart's hand upon his shoulder, and his lips at his ear.
"Quiet, and creep after me. Keep touching my foot so's not to miss me in the dark."
Abel's heart thumped against his ribs as he obeyed, taking Bart's hand first in a firm grip, and then feeling a short iron bar thrust between his fingers.
Then he became conscious from his companion's movements that he had gone down upon his hands and knees, and was crawling toward the end of the long, low, stone-walled building that served as a dormitory for the white slaves whose task was to cultivate the rough plantation till they, as a rule, lay down and died from fever or some of the ills that haunted the tropic land.
Just then Bart stopped short, for there were steps outside, and a gleam of light appeared beneath the heavy door. Voices were heard, and the rattle of a soldier's musket.
"Changing guard," said Abel to himself; and he found himself wondering whether the sergeant and his men would enter the prison.
To add to the risk of discovery, there was a shuffling sound on the left, and a clink of chains, as one man seemed to rise upon his elbow; and his movement roused another, who also clinked his chains in the darkness and growled out an imprecation.
All this time Bart remained absolutely motionless, and Abel listened with the perspiration streaming from him in the intense heat.
Then there was a hoarsely uttered command; the light faded away, the steps died out upon the ear; there was a clink or two of chains, and a heavy sigh from some restless sleeper, and once more in the black silence and stilling heat there was nothing to be heard but the loud trumpeting buzz of the mosquitoes.
Softly, as some large cat, Bart resumed his crawling movement, after thrusting back his leg and touching Abel on the chest with his bare foot as a signal.
The building was quite a hundred feet long by about eighteen wide, a mere gallery in shape, which had been lengthened from time to time as the number of convicts increased, and the men had about two-thirds of the distance to traverse before they could reach the end, and at their excessively slow rate of progress the time seemed interminable before, after several painful halts, caused by movements of their fellow-prisoners and dread of discovery, the final halt was made.
"Now, then, what is it?" whispered Abel.
The answer he received was a hand laid across his mouth, and his heart began to beat more wildly than ever, for Bart caught his hand, drew it toward him, and as it was yielded, directed the fingers downward to the stone level with the floor.
Abel's heart gave another bound, for that stone was loose, and as he was pressed aside he heard a faint gritting, his companion's breath seemed to come more thickly, as if from exertion, and for the next hour--an hour that seemed like twelve--Abel lay, unable to help, but panting with anxiety, as the gritting noise went on, and he could mentally see that Bart was slowly drawing out rough pieces of badly-cemented stone--rough fragments really of coral and limestone from the nearest reef, of which the prison barrack was built.
Three times over Abel had tried to help, but the firm pressure of his companion's hand forcing him back spoke volume, and he subsided into his position in the utter darkness, listening with his pulses throbbing and subsiding, as the gritting sound was made or the reverse.
At last, after what seemed an age, a faint breath of comparatively cool air began to play upon his cheek, as Bart seemed to work steadily on.
That breath grew broader and fuller, and there was a soft odour of the sea mingled with the damp coolness of a breeze which had passed over the dewy ground before it began to set steadily in at the opening at which Bart had so patiently worked, for that there was an opening was plain enough now, as Abel exultantly felt.
In his inaction the torture of the dread was intense, and he lay wondering whether, if they did get out, Mary would still be waiting, expecting them, or their efforts prove to have been in vain.
At last, just when he felt as if he could bear it no longer, Bart's hand gripped him by the shoulder, and pressed him tightly. Then in the darkness his hand was seized and guided where it hardly wanted guiding, for the young man's imagination had painted all--to a rough opening level with the floor, a hole little larger than might have been made for fowls to pass in and out of a poultry-yard.
This done, Bart gave him a thrust which Abel interpreted to mean, "Go on."
Abel responded with another, to indicate, "No; you go."
Bart gripped him savagely by the arm, and he yielded, crept slowly to the hole, went down upon his breast, and softly thrust his head through into the dank night air, to hear plainly the sighing and croaking of the reptiles in the swamp, and see before him the sparkling scintillations of the myriad fireflies darting from bush to bush.
He wormed himself on, and was about to draw forth one hand and arm, but always moving as silently as some nocturnal beast of prey, when it suddenly occurred to him that the glow of one of the fireflies was unusually large; and before he had well grasped this idea there was the regular tramp of feet, and he knew that it was the lantern of the guard moving across to the prison barrack, and that they must come right past where he lay.
He must creep back and wait; and as the steps steadily approached and the tramp grew plainer he began to wriggle himself through, getting his arm well in and his shoulders beginning to follow till only his head was outside, and the dull light of the lantern seeming to show it plainly, when to his horror he found that some portion of his garment had caught upon a rough projection and he was fast.
He made a tremendous effort, but could not drag it free, for his arms were pressed close to his sides and he was helpless. If Bart had known and passed a hand through, he might have freed him, but he could not explain his position; and all the time the guard was coming nearer and nearer, the lantern-light dancing upon the rough path, until it would be hardly possible for the nearest soldier to pass him without stumbling against his head.
Discovery, extra labour, the lash, more irons, and the chance of evasion gone; all those displayed, as it were, before Abel Dell's gaze as he thought of his sister waiting for them with that boat all plainly seen by the gleaming light of that lantern as the soldiers came steadily on.
It was absolutely impossible that the sergeant and his four men, whom the light had revealed quite plainly to Abel Dell, could pass him without something unusual occurred. The sergeant was carrying his lantern swinging at arm's length, on his left side, and the bottom as he passed would only be a few inches above the prisoner's head.
Abel knew all this as he pressed his teeth together to keep down the agonising feeling of despair he felt already as the men came on in regular pace, with the barrels of the muskets and their bayonets gleaming, and he expected to hear an exclamation of astonishment with the command "Halt!"--when something unusual did happen.
For all at once, just as the back of Abel's head must have loomed up like a black stone close by the sergeant's path, and the rays of light glistened on his short, crisp, black hair, there came a loud croaking bellow from down in the swamp by the crook, and Dinny exclaimed aloud: