The red arrow emitted a shower of sparks as it was discharged.
This time it winged its way straight and true and imbedded itself in the roof of the block-house.
Almost at the same instant a solitary rifle shot rang out and the daring warrior plunged headlong, sliding face downward in the dust of the road, while from the Fort came that demoniac yell now grown so familiar.
"Wetzel's compliments," muttered Jonathan.

"But the mischief is done.

Look at that damned burning arrow.

If it doesn't blow out the Fort will go." The arrow was visible, but it seemed a mere spark.

It alternately paled and glowed.