"Who is he?" she asked a nurse standing with her at the door of a ward, and pointing to the man slouching along with his basket across the open way.

"Oh, that? It is Nicko, the chocolate peddler," said the nurse carelessly. "A harmless fellow. Not quite right—here," and she tapped her own forehead significantly. "You understand? They say he lived here when first the Boches used their nasty gas, and he was caught in a cellar where a gas bomb exploded, and it affected his brain. It does that sometimes, you know," she added sadly.

Ruth's eyes had followed the chocolate seller intently. Around a corner of a hut swung the surgeon, who was already the girl's friend. He all but ran against the slouching figure, and he spoke sharply to the man.

For an instant the chocolate peddler straightened. He stood, indeed, in a very soldierly fashion. Then, as the quick-tempered surgeon strode on, Nicko bowed. He bowed from the hips—and Ruth gasped as she saw the obeisance. Only yesterday she had seen a man bow in that same way!

CHAPTER IX

COT 24—HUT H

The guns on the battle front had been silent for twenty-four hours; but there were whispers of the Yankees "getting back" at the Heinies in return for the outbreak of German gunfire which had startled Ruth Fielding the afternoon she had taken tea at the Chateau Marchand.

The outbreak of the new attack—this time from the American side—began about nine o'clock at night. A barrage was laid down, behind which, Ruth learned, several raiding parties would go over.

Just the method of this advance across No Man's Land Ruth did not understand. But all the time the guns were roaring back and forth (for, of course, the Germans quickly replied) she knew the American boys were in peril all along that sector.