“There! that gives the warning this time,” proclaimed the colonel, almost as eager in his interest as the two girls. “Six seconds and over go the puffs! See the officers and men are all at Gas Alert! See their hands go diving into their breast-satchels, snatching out their masks--adjusting them!”

“Iver had his on the soonest of any,” gloated Iver’s sister. “He--he’s just as quick’s a flash about everything--from temper to task!” the last words half under her breath, in a low chuckle of intense excitement, as she leaned forth over the pale, lumpy sand-bags, on which soldiers rested their weapons in rifle-practice, gazing along the narrow brown traverse beneath.

Over floated breezily the red-necked puffs--a few into one rounded trench-bay, a few into another.

Pop, pop, pop! went their snappy explosions, within a foot or two of an officer’s feet--the men not being stationed very close together--throwing up the prettiest little spitting foam of rose-red flame, lively to look upon against the brown earth of the trench-bay.

But what! All in one petrified instant the pale sand-bag became an ice-bag under the girls’ feet--to which their trembling, curdling soles froze!

Two low, pinched cries of startled fright rang out over that brown trench traverse.

Even Colonel Deering gave way to a hectic exclamation and hung, horrified, over the trench-brim! For--was it only a wild freak of the April gust, intent on the sham-battle, too, or a young chemist’s blundering aim?--one of those pelting powder-puffs drifted astray.

Wildly--wildly astray!

It lit not on the ground at an officer’s feet, but close and warm against his khaki breast--as if it would fire his heart--between his braided blouse and the respirator-satchel upon that heaving breast.

With his bare left hand he grasped it--nestling like a red-necked snail--to toss it to earth. But in the very act it exploded and wrapped those bare wrists of his in golden bracelets of flame;--a fierce, fledgling flamelet, just hatched out, which, winging upward, pecked greedily at the mask over his face, trying to peck through to his eyes! A stinging, searing flame that twined itself brilliantly about his stretched neck, his ears, the sides of his face, the roots of his hair--wherever it could find a sentient inch that the mask did not cover--with the pitting, piercing burn that only black powder can inflict.