"What's to be done, Tom?" repeated the contractor4.
"Well, Mr. Titus," was the answer, "the only thing I see to do is to make a new explosive."
"Can you do it, Tom?"
The reply was characteristic.
"I can try."
And in the days that followed, Tom began work on a new line. He had brought from Shopton with him much of the needful apparatus5, and he found he could obtain in Lima what he lacked.
A message to his father brought the reply that the new ingredients Tom needed would be shipped.
"The kind of explosive we need to rend6 that very hard rock," the young inventor explained to the Titus brothers, "is one that works slowly."
"I thought all explosions had to be as quick as a flash," said Walter.
"Well, in a sense, they do. Yet we have quick burning and slow-burning powders, the same as we have fuses. A quick-burning explosive is all right in soft rock, or in soil with rock and earth mingled7. But in rock that is harder than flint if you use a quick explosive, only the outer surface of the rock will be scaled off.
"If you take a hammer and bring it down with all your force on a hard rock you may chip off a lot of little pieces, or you may crack the rock, but you won't, under ordinary circumstances, pulverize2 it as we want to do in the tunnel.
"On the other hand, if you take a smaller hammer, and keep tapping the rock with comparatively gentle blows, you will set up a series of vibrations8, that, in time, will cause the hard rock to break up into any number of small pieces.
"Now that is the kind of explosive I want—one that will deal a succession of constant blows at the hard rock instead of one great big blast."
"Can you make it, Tom?"
"Well, I don't know. I'll do the best I can."
From then on Tom was busy with his experiments.
Work on the tunnel did not cease while he was searching for a new explosive. There was plenty of the old explosive left and charges of this were set off as fast as holes could be drilled to receive it. But comparatively little was accomplished9. Sometimes more rock would be loosed than at others, and the native laborers10, now seemingly perfectly11 contented12, would be kept busy. Again, when a heavy blast would be set off hardly a dozen dump cars could be filled.
But the work must go on. Already the time limit was getting perilously13 close, and the contractors14 did not doubt that their rivals were only waiting for a chance to step in and take their places.
Nothing more had been seen or heard of the bearded man, Waddington, or Blakeson & Grinder. But that the rival firm had not given up was evidenced by the efforts made in New York to cripple, financially, the firm in which Tom was interested. In fact, at one time the Titus brothers were so tied up that they could not get money enough to pay their men. But Tom cabled his father, who was quite wealthy, and Mr. Swift loaned the contractors enough to proceed with until they could dispose of some securities.
It might be mentioned that Tom was to get a large sum if the tunnel were completed on time, so it was to his interest and his father's, to bring this about if he could.
Tom kept on with his powder experiments. Mr. Damon helped him, for that gentleman had succeeded in putting the affairs of the wholesale15 drug business on a firm foundation, and there was no more trouble about getting the supplies of cinchona bark to market. The natives seemed to have taken kindly16 to the eccentric man, or perhaps it was the reputation of Tom Swift and his electric rifle that induced them to work hard.
He came and went at odd times, accompanied by his little retinue18 of Indians, a guide and a native cook. He would come back to the tunnel camp, where he made his headquarters, travel stained, worn and weary, with disappointment showing on his face.
"No luck," he would report. "The hidden city of Pelone is still lost."
Then he would retire to his tent, to pour over his note-books, and make a new translation of the inscription19 on the golden plates. In a day or so, refreshed and rested, he would prepare for another start.
"I'll find it this time, surely!" he would exclaim, as he marched off up the mountain trail. "I have heard of a new valley, never before visited by a white man, in which there are some old ruins. I'm sure they must be those of Pelone."
But in a week or so he would come back, worn out and discouraged again.
"The ruins were only those of a native village," he would say. "No trace of an ancient civilization there."
The professor took little or no interest in the tunnel, though he expressed the hope that Tom and his friends would be successful. But industrial pursuits had no charm for the scientist. He only lived to find the hidden city which was to make him famous.
He heard the story of the queer shaft20 leading down into the bore under the mountain, and, for a time, hoped that might be some clue to the lost Pelone. But, after an examination, he decided21 it was but the shaft to some ancient mine which had not panned out, and so had been abandoned after having been fitted with a balanced rocky door, perhaps for some heathen religious rite22.
There seemed to be no further trouble among the Indian tunnel workers. Those who had disappeared—who had, seemingly, gone willingly up the knotted rope to hide themselves in the valley—kept on with their work. If they told their fellows why and where they had gone, the others gave no sign. The evil spirits of the tunnel had been exorcised, and there was now peace, save for the blasts that were set off every so often.
Tom tried combination after combination, testing them inside and outside the tunnel, always seeking for an explosive that would give a slow, rending23 effect instead of a quick blow, the power of which was soon lost. And at last he announced:
"I think I have it!"
"Have you? Good!" cried Job Titus.
"Yes," Tom went on, "I've got a mixture here that seems to give just the effect I want. I tried it on some small pieces of rock, and now I want to test it on some large chunks24. Have you brought any down lately?"
"Yes, we have some big slabs in there."
Some large pieces of the hard rock, which had been brought down in a recent blast, were taken outside the tunnel, and in them one afternoon Tom placed, in holes drilled to receive it, some of his new explosive. The rocks were set some distance away from the tunnel camp, and Tom attached the electric wires that were to detonate the charge.
"Well, I guess we're ready," announced the young inventor, as he looked about him.
The tunnel workers had been allowed to go for the day, and in a log shack25, where they would be safe from flying pieces of rock, were Tom, Mr. Damon and the two Titus brothers.
Tom held the electric switch in his hand, and was about to press it.
"This explosive works differently from any other," he explained. "When the charge is fired there is not instantly a detonation26 and a bursting. The powder burns slowly and generates an immense amount of gas. It is this gas, accumulating in the cracks and crevices27 of the rock, that I hope will burst and disintegrate28 it. Of course, an explosion eventually follows, as you will see. Here she goes!"
Tom pressed the switch and, as he did so, there was a cry of alarm from Mr. Damon.
"Bless my safety match, Tom!" cried the old man. "Look! Koku!"
For, as the charge was fired, the giant emerged from the woods and calmly took a seat on the rock that was about to be broken up into fragments by Tom's new explosive.
点击收听单词发音
1 pulverized | |
adj.[医]雾化的,粉末状的v.将…弄碎( pulverize的过去式和过去分词 );将…弄成粉末或尘埃;摧毁;粉碎 | |
参考例句: |
|
|
2 pulverize | |
v.研磨成粉;摧毁 | |
参考例句: |
|
|
3 slabs | |
n.厚板,平板,厚片( slab的名词复数 );厚胶片 | |
参考例句: |
|
|
4 contractor | |
n.订约人,承包人,收缩肌 | |
参考例句: |
|
|
5 apparatus | |
n.装置,器械;器具,设备 | |
参考例句: |
|
|
6 rend | |
vt.把…撕开,割裂;把…揪下来,强行夺取 | |
参考例句: |
|
|
7 mingled | |
混合,混入( mingle的过去式和过去分词 ); 混进,与…交往[联系] | |
参考例句: |
|
|
8 vibrations | |
n.摆动( vibration的名词复数 );震动;感受;(偏离平衡位置的)一次性往复振动 | |
参考例句: |
|
|
9 accomplished | |
adj.有才艺的;有造诣的;达到了的 | |
参考例句: |
|
|
10 laborers | |
n.体力劳动者,工人( laborer的名词复数 );(熟练工人的)辅助工 | |
参考例句: |
|
|
11 perfectly | |
adv.完美地,无可非议地,彻底地 | |
参考例句: |
|
|
12 contented | |
adj.满意的,安心的,知足的 | |
参考例句: |
|
|
13 perilously | |
adv.充满危险地,危机四伏地 | |
参考例句: |
|
|
14 contractors | |
n.(建筑、监造中的)承包人( contractor的名词复数 ) | |
参考例句: |
|
|
15 wholesale | |
n.批发;adv.以批发方式;vt.批发,成批出售 | |
参考例句: |
|
|
16 kindly | |
adj.和蔼的,温和的,爽快的;adv.温和地,亲切地 | |
参考例句: |
|
|
17 bumper | |
n.(汽车上的)保险杠;adj.特大的,丰盛的 | |
参考例句: |
|
|
18 retinue | |
n.侍从;随员 | |
参考例句: |
|
|
19 inscription | |
n.(尤指石块上的)刻印文字,铭文,碑文 | |
参考例句: |
|
|
20 shaft | |
n.(工具的)柄,杆状物 | |
参考例句: |
|
|
21 decided | |
adj.决定了的,坚决的;明显的,明确的 | |
参考例句: |
|
|
22 rite | |
n.典礼,惯例,习俗 | |
参考例句: |
|
|
23 rending | |
v.撕碎( rend的现在分词 );分裂;(因愤怒、痛苦等而)揪扯(衣服或头发等);(声音等)刺破 | |
参考例句: |
|
|
24 chunks | |
厚厚的一块( chunk的名词复数 ); (某物)相当大的数量或部分 | |
参考例句: |
|
|
25 shack | |
adj.简陋的小屋,窝棚 | |
参考例句: |
|
|
26 detonation | |
n.爆炸;巨响 | |
参考例句: |
|
|
27 crevices | |
n.(尤指岩石的)裂缝,缺口( crevice的名词复数 ) | |
参考例句: |
|
|
28 disintegrate | |
v.瓦解,解体,(使)碎裂,(使)粉碎 | |
参考例句: |
|
|
欢迎访问英文小说网 |