CHAPTER XXI.

DYNAMITING TO FREEDOM.

Ben Stubb’s welcome solution of the problem of how to escape from the

valley, came as a great relief to the boys. As he had related the

narrative of his years of solitude up there, their hearts had sunk as

the realization, that they too might be doomed to the same fate, had

invaded them. With the discovery that the prospector had dynamite and

the needful apparatus for setting off a blast without injury to the man

who fired it, however, their future had assumed a bright tinge, and when

they went to bed that night in the rough cave that had been the

outcast’s home for such a long time, their dreams of the morrow were

pleasant and hopeful.

Both the Chester boys had been deeply worried at the idea of the anxiety

their unexplained absence must be causing their father, and Frank

bitterly blamed himself for having decided to go forward with the

exploration of the tunnel before he had notified his father of their

discovery.

They were up betimes and set about the ticklish business of transporting

the keg of dynamite to the Serpent Chasm, where it was to be put to such

effective use. It was decided that for the purpose for which they

required it only a small quantity would be necessary—in fact none of

them wanted to run the risk of widening the chasm by placing too heavy a

charge. Ben, who was experienced in the use of explosives, figured—the

force of dynamite being downward—that if the blast was fired at a depth

of roughly two hundred feet down the chasm, that there would be no

danger of damaging the upper edges of the abyss so as to render them

impossible or to dislodge the chain on which they depended to make their

way to freedom.

Before the final preparations to evacuate the valley were set about,

however, Ben took steps to hide the bar gold away carefully, with the

aid of the boys, who, the warm-hearted sailor insisted, were to receive

a share of it as soon as they could make up an expedition to the valley,

and return to carry the precious metal out to civilization.

The castaway, too, had another important mission to perform. Beneath

that little grove of palms, at the wooded end of the valley already

mentioned, there were two rough graves over which Ben had erected two

headstones bearing simply his dead comrades’ names and the date of their

deaths, carved by his knife. Alone the man who had shared their

loneliness went to the spot where the dead prospectors slept their last

sleep, and knelt bareheaded over the rough mounds. When he turned to the

cave he was more serious than the boys had ever seen him during their

brief friendship and he did not speak till everything was declared ready

and it was time to lower the keg of high explosive into the shaft.

With the rawhide lariat with which he had rescued them, the keg was

carefully belayed into the hole and then one by one the adventurers slid

down it. It was with moist eyes the boys looked about them, as they once

more trod what, but for Ben Stubbs’ timely intervention, would have been

their tomb. One by one they wrung his hand warmly.

“That’s all right, shipmates,” Ben kept repeating, much embarrassed,

“’twarn’t nothing at all—nothing at all—I’d have liked—” he added, with

a touch of wistfulness in his voice—“for my poor dead mates to have been

here, too, this day.”

As they started down the passage under such different auspices to those

under which they had made their way up it, Frank suddenly stopped and

with his knife cut off about six inches of the trailing rawhide rope. He

sliced this length up again into four pieces, kept one himself and

handed one to each of his three companions. Long afterward they were to

remember those souvenirs and treasure them as among their choicest

possessions.

Frank had contrived a sort of sling, out of blankets, in which the heavy

keg of powder was slung. Through the loop that this formed a long branch

with a hooked end was thrust. This was to grapple the chain with, after

the explosion from which they hoped so much had taken place. It was a

short time later that they reached a spot about half-a-mile from the

White Serpents’ Chasm, and here the keg was left after Ben had selected

a couple of long brownish sticks from it. These he tipped with fulminate

of mercury caps, which were later in their turn to be attached to the

five hundred feet of sparking wires of the battery.

At this moment Frank recollected something that sent a thrill of

disappointment through him.

“How old is your battery?” he asked anxiously of Ben.

“All of five years,” responded the prospector, “why?”

“Because I’m afraid it’s too old to be any good,” was the reply that

sent a shock of bitter disappointment through them all.

Anxiously they watched while Frank made a test. His fear was only too

true. No encouraging blue spark responded, when the detonating key was

pressed down. In the first feeling of dumb despair nobody found words.

Billy was the first to speak:

“Hold on there,” he cried, “you fellows have got electric light torches

in your pockets?”

“By Jove,” cried Frank happily, “what a dumb idiot I am—thank you,

Billy. I never thought of that.”

To the boys’ delight the batteries from their torches, which luckily

they had had made of extra power and efficiency, answered perfectly.

When they were connected up to the wires a good “fat” spark was shown.

“That’s a massive brain of yours, Billy,” complimented Frank.

“Oh, pshaw, Frank; you’d have thought of it later,” protested the

reporter, delighted nevertheless at having gained the young leader’s

approbation.

“Now then,” said Ben, when all was declared ready, “this thing is one

man’s job. Old man dynamite don’t like a crowd around when he

celebrates. You boys stay back here.”

In view, however, of the danger of an attack by the aroused serpents he

consented finally to allow Frank to accompany him down the tunnel to the

chasm. The two companions,—the seasoned, toughened man and the brave

boy,—set forth on their dangerous mission in silence. It was no time for

talking. All their plans were agreed upon. Ben was to lower the sticks

of dynamite, cautiously over the brink of the serpent-filled abyss and

Frank, with his rifle ready for emergencies, was to stand behind him

ready to drop any of their scaly enemies that might protest against the

invasion of their long undisputed kingdom.

A creepy feeling came over Frank as their candles showed them that they

were hard upon the chasm. The hour of the experiment upon which so much

hung was at hand. Ben without the quiver of an eyelid, held up a hand to

enjoin absolute silence and crept on his belly to the edge of the pit.

So far everything had gone well. There was not a sign, but the peculiar

odor of musk that filled the air, that they were on any more dangerous

task than the placing of an ordinary placer mine blast. Frank, as he

watched Ben proceed to work, realized the purpose of a long bit of heavy

board the prospector had brought with him.

Ben stuck one end of the board, which was about six feet long, out about

two feet beyond the edge of the pit brink, having previously rigged the

wires into a notch he had cut in its outer end. Frank saw at once that

this was to obviate any danger of the giant powder striking the edge of

the chasm as it was lowered and causing a premature explosion, which

would certainly have cost them their lives.

All went well till Ben had lowered possibly sixty feet of wire and then

there came a loud angry hiss, which soon grew into a sound of furious

reptilian rage that reverberated in the narrow tunnel, like waves

breaking on a beach. As Frank heard, with a chill of horror, this

indisputable evidence that at that very moment the dynamite was brushing

the soft scaly backs of a nest of huge white serpents, his blood ran

cold.

Suddenly, Ben straightened himself up with a shout.

“All set!” he roared, and, leaping to his feet, started running like a

jack rabbit back down the tunnel toward the battery-box. As if his cry

had been a signal, an enormous white head, with the same sightless eyes

that had distinguished the serpent Billy escaped from, arose from the

edge of the pit with an angry hiss. In its snow-white head, its red

tongue darted in and out like a flash of livid flame.

“Run Frank! Run for your life!” shouted Ben, as the loathsome monster

hurled itself out of the pit and started after him. Hardly knowing what

he did, Frank fired point-blank at the creature in a perfect spasm of

disgust and fear. He saw it writhe in great convulsions and as if in a

nightmare, witnessed the awful spectacle of two of its enraged brethren

wriggle toward him at lightning speed over the edge of the pit. He

turned to run but stumbled. As he fell he felt himself picked up by Ben

Stubbs and fairly dragged over the ground up the tunnel to where the

battery stood. He saw Ben bend over the box and shout back into the

tunnel to where the others were: “Lie flat everybody!”

Mechanically, Frank lay still and mechanically he heard the quick snap

as Ben closed the circuit.

The next moment there was a roar that seemed to be the tearing out of

the bowels of the earth. The tunnel became filled with choking fumes and

Frank knew no more till he found himself crawling back with bleeding and

cut hands and face to where the others lay, also stunned from the

terrific concussion of the explosion in the small space in which it

occurred.

Dazed and staggering the boys still managed to regain their wits in a

few minutes, and made their way down the tunnel to where Ben Stubbs had

set his battery-box. To their inexpressible relief they found the hardy

outcast sitting up with a cheerful grin on his countenance, dabbing away

at a wound on his forehead.

“Kind ’er like settin’ in a gun-barrel, when someone pulls the trigger,

eh, boys?” he remarked cheerfully, “but I guess we set off our little

Fourth of July celebration just in time.”

It was even as Ben said. When they had sufficiently recovered from their

daze to proceed, they discovered the bodies of the three serpents—the

one Frank had shot and the two others—torn almost to rags by the force

of the concussion.

“There ain’t much sarpint life left in that hole now, I’m thinking,”

remarked Ben, leading the way to the edge of the chasm. The blue smoke

of the explosion still curled up from it; but when they threw down some

rocks by way of experiment, no answering hiss came back. Modern dynamite

had wiped out the Toltecs’ watch-dogs.

The Boy Aviators in Nicaragua; or, In League with the Insurgents · 第 21 / 29 章