"Well, then," Frank went on, "that's what's going to happen on this ship."
"Whatever do you mean? I suppose I'm dense, but I don't see yet."
"I mean," said Frank, "that I've fixed the gas-heating radiators so that in a few hours the bag above our head will be ripped into tatters by a gas explosion. The resistance coils are now heating and expanding the gas at a rate of ten times above the normal and the gauge I have adjusted so that an inspection of it will show nothing to be the matter."
"But what good will that do us?" urged Harry.
"It may save our lives. In any event the Viking treasure will never be taken from here by another nation."
CHAPTER XXVII.
THE FATE OF THE DIRIGIBLE.
"Have you any idea what time the explosion will take place?" asked
Harry, anxiously, almost dumbfounded by the other's cool manner.
"Soon after dark has fallen. Don't be scared, it won't hurt us; at least I think not, but in the confusion that is certain to follow we must make a dash for the Golden Eagle."
"It's a desperate chance."