They entered the garden, the cab driver walking beside Adhémar, who said to him:

"Look carefully at all the men—the young men, I mean—and as soon as you see the one who was with that lady, say: 'There he is!'"

"All right, bourgeois; or, say I cough to warn you?"

"Very well."

There were few people in the garden. Adhémar walked rapidly, and his companion could hardly keep up with him.

"Sapristi!" he cried; "you travel faster than my horses!"

A young man passed them, and the cabman began to cough.

"Well!" exclaimed Adhémar, stopping abruptly.

"That's not the man, bourgeois."

"What in the devil did you cough for, then?"