"Kill 'em?"

"Not that bad. But mebby they'll drown. H'I'll go see. H'I'd 'ate t' see 'em climbin' back."

He hurried up the hatchway, followed closely by Dave.

Not a sign of the two men was to be seen, either on the submarine, in the water or on the solid shore-ice, a few rods away.

"What d' y' think of that?" asked Jarvis, mopping his brow. "They're gone!"

"Perhaps they drowned."

"Mebbe drowned—mebby they're 'id h'in th' h'ice."

"Well, anyway, we're rid of them," said Dave. "We'll sew the dead one up in a blanket and throw him overboard; then we'll be going back. Think how all fussed up the Doctor will be." The boy chuckled.

"Going back?" Jarvis stared, as if unable to believe his ears. "Going back? And the treasure city within peep of h'our h'eyes. Going back, did y' say? H'I 'ates t' think 'ow rich we'll be, you an' me."

The sun was setting behind the dark line of timber. Some object at a point where the timber ended and the tundra began cast back the sunlight with a golden glow.