Four miles away, to the eastward, its fellow in another aviation camp let go, and the sound of its discharge came to us faintly but distinctly.

Another smoke flower unfolded in the heavens, somewhat below the darting airship.
Both guns were in action now.

Each fired at six-second intervals.

All about the flitting target the smokeballs burst--above it, below it, to this side of it and to that.

They polka-dotted the heavens in the area through which the Frenchman scudded.