And now came an incident which brought Pierre’s emotion to a climax. A tall sturdy man on turning out of the Rue Caumartin caught sight of Salvat, and approached him. And just as the new comer without false pride was shaking the workman’s hand, Pierre recognised him as his brother Guillaume. Yes, it was indeed he, with his thick bushy hair already white like snow, though he was but seven and forty. However, his heavy moustaches had remained quite dark without one silver thread, thus lending an expression of vigorous life to his full face with its lofty towering brow. It was from his father that he had inherited that brow of impregnable logic and reason, similar to that which Pierre himself possessed. But the lower part of the elder brother’s countenance was fuller than that of his junior; his nose was larger, his chin was square, and his mouth broad and firm of contour. A pale scar, the mark of an old wound, streaked his left temple. And his physiognomy, though it might at first seem very grave, rough, and unexpansive, beamed with masculine kindliness whenever a smile revealed his teeth, which had remained extremely white. While looking at his brother, Pierre remembered what Madame Theodore had told him that morning. Guillaume, touched by Salvat’s dire want, had arranged to give him a few days’ employment. And this explained the air of interest with which he now seemed to be questioning him, while the engineer, whom the meeting disturbed, stamped about as if eager to resume his mournful ramble. For a moment Guillaume appeared to notice the other’s perturbation, by the embarrassed answers which he obtained from him. Still, they at last parted as if each were going his way. Then, however, almost immediately, Guillaume turned round again and watched the other, as with harassed stubborn mien he went off through the crowd. And the thoughts which had come to Guillaume must have been very serious and very pressing, for he all at once began to retrace his steps and follow the workman from a distance, as if to ascertain for certain what direction he would take. Pierre had watched the scene with growing disquietude. His nervous apprehension of some great unknown calamity, the suspicions born of his frequent and inexplicable meetings with Salvat, his surprise at now seeing his brother mingled with the affair, all helped to fill him with a pressing desire to know, witness, and perhaps prevent. So he did not hesitate, but began to follow the others in a prudent way.