“No, that is too far off. But if we can only get to the river bank we’ll be sure to strike the camp sooner or later,” went on Mark. “I’ll come down as soon——”

Mark broke off short, as a peculiar noise just below him caught his ear. Looking down he saw a strange looking creature sitting on a branch, gazing fiercely at him, a creature covered with black and white quills and with a scaly tail that wound itself several times around the branch behind it. The animal was a coendoo, commonly called a South American porcupine.

CHAPTER XXX
IN THE DEPTHS OF THE JUNGLE

Ordinarily the South American porcupine or coendoo is a timid animal, seeking cover by day and hunting its food during the night. It lives upon nuts, roots, herbs and leaves and, unlike other porcupines which burrow in the ground, makes its home, to a great extent, in the branches and hollows of large trees.

But though usually timid it is at times aroused to great anger, especially when startled. Such was now the case with the beast that confronted Mark. Every quill, or spine, was raised to its fullest and the porcupine emitted a strange hissing whistle which bode the youth no good.

Mark was startled, so much so that he slipped from the branch upon which he stood and came close to pitching to the ground head first. But he caught another branch and with an effort swung himself up to a sitting position.

“Are you coming down?” called out Frank.

“I can’t! Here’s a porcupine, or something like it. He looks as if he was going to attack me.”

As Mark spoke he felt in his pocket for his pistol and brought the weapon forth. It was fully loaded and he pointed it at the coendoo, which was now moving slowly backward as though to prepare for a leap upon him.

Crack! went the pistol and the porcupine was struck a glancing blow over the back. Then it made its leap, landing on Mark’s breast!