Fire at will!" Out from belts and pockets came the lethal pistols.

With well-estimated elevation, the attackers sighted, each covering his own sector.

Hissing with hardly audible sighs, the weapons fired their stange pellets, and once again as over the woods on the Englewood Palisades--really less than twenty-four hours ago, though it seemed a month--the little greenish vapor-wisps floated down, down, sinking gently on the Sahara air.
This attack, they knew, must be decisive or all would be hopeless.

The last supply of capsules was now being exhausted.

Everything had been staked on one supreme effort.