From my note-book I tore out a page, and from the ammunition box took a shot-gun shell.
Removing the wads from the latter with my knife, I emptied the powder on a flat rock.

Next I pried the primer, or cap, from the shell, and laid it on the rock, in the midst of the scattered powder.

All was ready.
Maud still watched from the tent.

Holding the paper in my left hand, I smashed down upon the cap with a rock held in my right.

There was a puff of white smoke, a burst of flame, and the rough edge of the paper was alight.
Maud clapped her hands gleefully.