How does Allan W. Eckert use imagery in The Frontiersmen: A Narrative?

Imagery:

"Hatless, shoeless, without gun or knife, provisions or money, clad only in worn linsey-woolsey shirt and trousers stained with blood which he smudged away with dirt and damp leaves, Simon Kenton - aged sixteen years and seven days - headed into the unknown."

The Indian certainly appeared asleep but it might well be a rues. Every nerve in the big frontiersman's body was poised for instant flight and he moved to within twenty yards of the clearing with less noise than a sunbeam makes as it slides across the forest floor."