And now it became imperative that Bert should hear the conference that concerned him so tremendously. From where he was, he could see perfectly, but could hear nothing but an occasional disconnected word. He must leave his safe retreat, take his life in his hands and reach the veranda that ran beneath the open window.

Silently, he removed his shoes, and, tying them together by the laces, hung them over the branch. Then he crept out on the heavy bough that reached within three feet of the porch. Holding on by his hands, he let himself down, swung back and forth once or twice to get the proper momentum, and then letting himself go, landed as lightly as a lynx upon the veranda. A moment he swayed trying to keep his nearly lost balance, while he looked anxiously to see if the conspirators had heard. They showed no sign of disturbance, however, and, with a muttered prayer of thankfulness, Bert dropped on his hands and knees and crept beneath the sill. And there, safe for the instant, with every faculty strained to its utmost, he became a fourth, if unseen, member of the group.

CHAPTER XIII

MARKED FOR DESTRUCTION

Ofirio was speaking.

"I am sure that nothing has been overlooked," he was saying, evidently in answer to a question. "The charges of dynamite have been tamped into the holes, and there are enough of them, fired at the same moment, to wreck the eastern gate. In any event, it will so injure the delicate machinery that works them, that they cannot be moved. Portions of it, no doubt, will be blown into the Canal and block it so effectually that no ship can pass through. But, leaving that out of the question, if the gate cannot work, the Canal is put out of commission. It would be a matter of weeks, perhaps of months, to repair the damage."

"The longer the better, of course," said Namoto, "but we do not ask even
that much of fate. Give us ten days of confusion and panic, with the
Atlantic fleet on this side of the Canal and unable to get through to the
Pacific, and our victory is sure."

"How about the tunnel?" asked Togi, the oldest of the three. "Are you sure there is no suspicion that it exists?"

"Not the slightest," answered Ofirio. "I came through it myself, last night, entering it at the masked exit near the locks, and leaving it by the secret opening in your cellar. Nothing has been disturbed, and the divers' helmets were in their accustomed place. If the Americans had any knowledge of it, their soldiers would already be in possession."

"Provided that we can keep the secret until the day of the grand opening," muttered Togi, uneasily. "You are sure," he went on, "that the connections are perfect?"