"Will he do it?" questioned Whopper.

"We can try him and see."

The end of the line was made fast to the collie's collar, and Giant
was told to call him.

"Come, Wags! That's a good dog! Come!" called the small youth,
and whistled and snapped his fingers.

At first Wags appeared to be doubtful, but finally he ventured into
the water. Then he began to swim steadily toward the rock, dragging
the line behind him.

"What a shame if the current carries him away!" murmured Whopper.

"We'll not allow that," answered the doctor's son. "If he loses
ground we can haul him in."

Slowly but surely the dog drew closer to the rock. At last he got
within Giant's reach, and the youth caught him and pulled him up.

"Tie the rope about your waist and we'll haul you to shore!" sang
out Shep. "Bring the dog on your shoulder if you can."

"I'll try it," answered Giant.

It was no easy matter for him, on the wet and slippery rock, to
adjust the rope and get the collie on his shoulder. But presently