“Dig,” cried George. “That’s the important word. Dig! Dig! Dig!”
“Wait a minute, Pop,” exclaimed Grant. “We’ve got to find the place where we are to dig first, you know.”
“All right,” said George eagerly. “Here’s the compass.”
“Lay it flat out on the rock,” directed Grant. “We’ll take our first observation.”
The little instrument was placed on top of the great rock while the five gold seekers crowded around it eagerly. The delicate indicator fluttered excitedly for some moments, then its fluctuations gradually became less and less. At last it stopped entirely, the tiny needle pointing exactly north.
“There we are,” exclaimed George. “Now if we go directly opposite to the way that needle is pointing we’ll find the southern extremity of this rock.”
“That’s what we want,” cried Grant. “You walk down there, Fred.”
Fred hastened to obey and soon stationed himself at the opposite end of the rock, which happened to be the tail of the shark.
“Get in direct line now,” directed Grant.
“You’ll have to tell me what that is,” replied Fred. “I can’t tell the exact spot, you know, from looking at it.”