The force was so great that the mountain lion, partly off its balance, fell back. A horrid screech rang out—then another, as the buck landed its hoofs viciously on the prostrate form.

But the tawny beast recovered himself quickly, crouched with flattened ears, and fiercely attacked its prey.

Bravely the buck met the advance, but the powerful paws of the panther soon brought him to his knees.

"That's the end of him," whispered Bob. "Christopher! No, he's up again. Look at that!"

"Wish he'd send the old monster over the cliff," said Dick, breathlessly. "He's doing wonders."

With a desperate effort, the goat rose on its hind legs, and shook off his antagonist. Backing away, the animal approached the edge of the precipice.

"Wow!" gasped Dick, "he'll be over in a minute."

"The brave old buck deserves to live, after putting up such a game fight," declared Dave. "Come on, fellows—to the rescue!"

The four began scrambling hastily down over the rocks toward the combatants.

"Hey! Don't fire until I get a chance with my camera," panted Dick, excitedly.