Then I could see the red-tongued flames darting in and out through the wood like tiny snakes.

The smoke grew thicker and thicker, at times shrouding the whole face of the cliff.

But I was high up and it did not bother me much, though it stung my eyes and I rubbed them with my knuckles.
Old Marrow-Bone was the first to be smoked out.

A light fan of air drifted the smoke away at the time so that I saw clearly.

He broke out through the smoke, stepping on a burning coal and screaming with the sudden hurt of it, and essayed to climb up the cliff.