those lights up out of the water. Don't want us
to be in the dark, do you?"

There is so much influence in one person's vitality, and the way in
which an order is given, that Joe started as if he had had an electric
current passed through him. He stood as straight up as he could for the
roof, and looked sharply at Gwyn, as if for orders.

At the same time the dog began to bark, and struggled to get free.

"Oh, very well," said Gwyn, letting go of the dog's legs; "but you'll
soon want to get back."

Down went Grip with a tremendous splash, and disappeared; but he rose
again directly, and began to swim away with the stream and was soon out
of sight.

"Oh, Joe, Joe, what have I done!" cried Gwyn. "He'll be drowned--he'll
be drowned!"

"Ay, sir, and so shall we before an hour's gone by," said Hardock,
gloomily.

"I can't help it--I must save him," cried Gwyn; and snatching one of the
lanthorns from Joe, he waded off after the swimming dog.

"We can't stop here by ourselves, Sam," cried Joe. "Come along."

Hardock uttered a groan.

"I don't want to die, Master Joe Jollivet--I don't want to die," he said
pitifully.

"Well, who does?" cried Joe, angrily. "What's my father going to do
without me when he's ill. Come on. They'll be finding the way out, and
leaving us here."

"Nay, Master Gwyn wouldn't do that," groaned Hardock. "He'd come back
for us."

Gwyn's pursuit of the dog had done one thing; it had started his
companions into action, and they, too, waded with the stream pressing
them along, till away in the distance they caught sight of the light
Gwyn bore, shining like a faint spark in the darkness or reflected in a
pale shimmering ray from the hurrying water.

For how long they neither of them knew, they followed on till Gwyn's
light became stationary; and just then Hardock raised his, and uttered
an exclamation.

"I know where we are now," he cried, as he raised his lanthorn and
pointed to one of his white arrows. "It looks different with the place
half full of water, but we're close to that dead end that runs up."

Just then they heard the barking of the dog.

"And that's where he has got to," continued Hardock. "How did he come
to think of going there?"

"Ahoy--oy--oy--oy!" came halloaing from Gwyn, who had long been aware
from their lights that his companions were following him.

They answered, and dragged their weary way along, for the water still
deepened, and in his impatience G