Once, crawling on a horizontal branch, he slid over and hung beneath it, like an opossum.
Twisting and wriggling his way out of this predicament, he scrambled on, handing himself from branch to branch, and once losing his foothold and hanging by one hand.
Tom Slade watched spellbound, as the agile form ascended, using every physical device and disregarding every danger.

More than once Tom almost shuddered at the chances which his young companion took upon some perilously slender limb.

Once, the impulse seized him to call a warning, but he refrained from a kind of inspired confidence in that young dare-devil who by now seemed a mere speck of brown moving in and out of the darkened green above him.

Once he was on the point of shouting advice to Hervey about what to do in the unlikely event of his reaching the nest before the eagle, or in the more serious contingency of an encounter with that armed warrior.
For, thrilled as he was at the young scout's agility and fine abandon, he was yet doubtful of Hervey's power of deliberation and presence of mind.

But no one could advise a creature capable of being carried away in a very frenzy of nervous enthusiasm, and Tom, sober and sensible, knew this.