One of the guns apparently missed fire, and as he was placing fresh powder in the touchhole the stuff went off.
One of the men inserted a percussion fuse in the touchhole of the mortar.
It always is there with men of Bertie's order, and only comes to light when the match of danger is applied to the touchhole.
Then he laid that match to the touchhole and another rain of iron swept down the street.
Carefully, deliberately, Pamela Russell lowered her candle to the cannon's touchhole.
The first charge was twenty pounds of powder, not more than nineteen of them running out of the touchhole.
There rose a little smoke from the touchhole plate, but no shot resounded.