“Ha?” cried Allan, “that reminds me; I’ve got those face mufflers. There! I’ll show you how to put one on. The fur side goes inside—thus; now I have a hole to breathe through, and a couple of holes for vision.”

“And a pretty guy you look!”

“Oh! bother the looks,” responded Ralph, “let us all be guys. Give us a mask, old man.”

They did feel more comfortable now that they had the masks on, and could gaze about them without the risk of being frozen.

The cold was intense; it was bitter.

“I’d beat my feet to keep them warm,” said Rory, “if I didn’t think I’d beat the bottom of the car out. Then we’d all go fluttering down like so many kittywakes, and it’s Captain McBain himself that would be astounded to see us back so soon.”

“Gentlemen,” said the Frenchman, “we are right over the mouth of the crater. I shall now make descent, with your permission. Then it vill not be so cold.”

“And is it inside the volcano,” cries Rory, “you’d be taking us to warm us? Down into the crater, to toast our toes at Vulcan’s own fireside? Sure, Captain De Vere, it is splicing the main-brace you’re after, for you want to give us all a drop of the craytur.”

“Oh!—oh!” this from Ralph. “Oh! Rory—oh! how can you make so vile a pun? In such a situation, too!”

The gentlest of breezes was carrying the balloon almost imperceptibly towards the north and west; meanwhile De Vere was permitting a gradual escape of gas, and the Perseverando sunk gradually towards the mountain-top, the mouth of which seemed to yawn to swallow them up. There was a terrible earnestness about this daring aeronaut’s face that awed even Rory into silence.