scoundrel found a last remnant of strength to sign his name clearly. He feared that a doubt might be entertained of his villainy. And indeed how could any one have suspected it?"
And, looking at Don Luis, he added:
"It needed, to solve the mystery, a really exceptional power of insight and gifts to which we must all do homage, to which I do homage. All the explanations which that madman gave have been anticipated in the most accurate and bewildering fashion."
Don Luis bowed and, without replying to the praise bestowed upon him, said:
"You are right, Monsieur le Préfet; he was a madman, and one of the most dangerous kind, the lucid madman who pursues an idea from which nothing will make him turn aside. He pursued it with superhuman tenacity and with all the resources of his fastidious mind, enslaved by the laws of mechanics.
"Another would have killed his victims frankly and brutally. He set his wits to work to kill at a long date, like an experimenter who leaves to time the duty of proving the excellence of his invention. And he succeeded only too well, because the police fell into the trap and because Mme. Fauville is perhaps going to die."
M. Desmalions made a gesture of decision. The whole business, in fact, was past history, on which the police proceedings would throw the necessary light. One fact alone was of importance to the present: the saving of Marie Fauville's life.
"It's true," he said, "we have not a minute to lose. Mme. Fauville must be told without delay. At the same
