"She drank it?"

"No, she carried it to her mother," Louis replied as slowly as he dared. Fawning on the hand that had struck him, he would fain bite it if he could do so safely. "I did not see what followed," he went on, "they were behind the screen. But I heard her say that it was Madame's medicine. And I made out enough——"

"Ah!"

"To be sure that her mother drank it."

Blondel stared at him a moment, wide-eyed; then, with a cry of despair, bitter, final, indescribable, the Syndic turned and hurried away. He did not hear the timid remonstrances which Louis, who followed a few paces behind, ventured to utter. He did not heed the wondering looks of those whom he jostled as he plunged into the current of passers and thrust his way across the bridge in the direction whence he had come. The one impulse in his blind brain was to get home, that he might be alone, to think and moan and bewail himself unwatched; even as the first instinct of the wounded beast is to seek its lair and lie hidden, there to await with piteous eyes and the divine patience of animals the coming of death.

But this man had the instinct only, not the patience. In his case would come with thought wild rages, gnawings of regret, tears of blood. That he might have, and had not, that he had failed by so little, that he had been worsted by his own tools—these things and the bitter irony of life's chances would madden and torment him. In an hour he would live a lifetime of remorse; yet find in his worst moments no thought more poignant than the reflection that had he played the game with courage, had he grasped the nettle boldly, had he seized Basterga while it was yet time, he might have lived! He might have lived! Ah, God!

Meanwhile Louis, though consumed with desire to see what would happen, remained on the bridge. He had tasted a fearful joy and would fain savour more of it if he could do so with a whole skin. But to follow seemed perilous; he held the Syndic's mood in too great awe for that. He did the next best thing. He hastened to a projecting part of the bridge a few paces from the spot where they had conferred; there he raised himself on the parapet that he might see which way Blondel turned at the end of the bridge. If he entered the town no more could be made of it: but if he turned right-handed and by the rampart to the Corraterie, Louis' mind was made up to risk something. He would follow to the Royaumes' house. The magistrate could hardly blame him for going to his own lodging!

It was a busy hour, and, cold as it was, a fair number of people were passing between the island and the upper town. For a moment, look as he might, he could not discern the Syndic's spare figure; and he was beginning to think that he had missed him when he saw something that in a twinkling turned his thoughts. On the bank a little beside the end of the bridge stood Claude Mercier. He carried a heavy stick in his hand, and he was waiting: waiting, with his eyes fixed on our friend, and a look in those eyes that even at that distance raised a gentle sweat on Louis' brow.

It required little imagination to follow Claude's past movements. He had gone to the Syndic's house at nine, and finding himself tricked a second time had returned hot-foot to the Corraterie. Thence he had tracked the two to this place. But how long had he been waiting, Louis wondered; and how much had he seen? Something for certain. His face announced that; and Louis, hot all over, despite the keen wind and frosty air, augured the worst. Cowards however have always one course open. The way was clear behind him. He could cross the island to the St. Gervais bank, and if he were nimble he might give his pursuer the slip in the maze of small streets beside the water. It was odd if the lapse of a few hours did not cool young Mercier's wrath, and restore him to a frame of mind in which he might be brought to hear reason.

No sooner planned than done. Or rather it would have been done if turning to see that the way was clear behind him, Louis had not discovered a second watcher, who from a spot on the edge of the island was marking his movements with grim attention. This watcher was Basterga. Moreover the glance which apprised Louis of this showed him that the scholar's face was as black as thunder.