"All out, sor," Tim responded. "Yez kin fire whin ready, Mr. Swift."
It was a portentous moment. No wonder Tom Swift hesitated. In a sense he and his friends, the contractors, had staked their all on a single throw. If this blast failed it was not likely that another would succeed, even if there should be time to prepare one.
The time limit had almost expired, and there was still a half mile of hard rock between the last heading and the farther end of the big tunnel. If the blast succeeded enough rock might be brought down to enable the work to go on, by using a night and day shift of men. Then, too, there was the chance that the hard strata of rock would come to an end and softer stone, or easily-dug dirt, be encountered.
"Well, we may as well have it over with," said Tom in a low voice. Every one was very quiet—tensely quiet.
The young inventor looked up to see Professor Bumper observing him.
"Why, Professor!" Tom exclaimed, "I thought you had gone off to the mountains again, looking for the lost city."
"I am going, Tom, very soon. I thought I would stop and see the effect of your big blast. This is my last trip. If I do not find the hidden city of Pelone this time, I am going to give up."
"Give up!" cried Mr. Damon. "Bless my fountain pen!"
"Oh, not altogether," went on the bald-headed scientist. "I mean I will give up searching in this part of Peru, and go elsewhere. But I will never completely give up the search, for I am sure the hidden city exists somewhere under these mountains," and he looked off toward the snow-covered peaks of the Andes.
Tom looked at the battery box. He drew a long breath, and said: