"Blocks of ice."
"So we could. I wonder I didn't think of that. It's a good idea, Fred. We'll do it. Get the picks and shovels. We can soon throw up a breastwork that will be proof against their bullets, and, as we occupy the highest ground, they can't fire down on us."
There was plenty of material for the fort, and before night there was a good rampart of ice, built in a semicircle out from the big rock, and taking in the tent and sleds, to which the dogs were kept fastened. They were quiet now, Mr. Baxter having given them a good feeding of seal blubber.
"What are your plans?" asked Fred after an early supper. "Do you think they will attack us to-night?"
"I hope not, for I want to put into execution a scheme I have thought of."
"What is it, dad?" asked Jerry.
"I think we will bury the treasure and make a dash to escape."
"Bury the treasure? Where?"
"Right here. We can cut a deep hole down under the ice and snow, put the bags of gold in, cover them up, and then be in readiness to make a dash through their lines."
"Suppose they pursue us?"