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 Loge, so Cleggett divined. Cleggett was astonished at the number of jobs which Loge had engineered. The book threw light on mysterious explosions which had occurred throughout a period of five years.

But it was the third manuscript book which displayed the real Logan Black.

This was also in cipher. Dr. Farnsworth and Cleggett had translated but a few lines of it when they perceived that it was a diary. With a vanity almost inconceivable to those who have not reflected upon the criminal nature, Loge had written here the tale of his own life, for his own reading. He had written it in loving detail. It was, in fact, the book in which he looked when he wished to admire himself.

"It is odd," said Cleggett, "that so clever a man should write down his own story in this way."

"This book," said Farnsworth, "would be a boon to a psychologist interested in criminology. You say it is odd. But with a certain type of criminal, it is almost usual. The human soul is full of strange impulses. One of the strangest is towards just this sort of record. Cunning, and the vanity which destroys cunning, often exist side by side. The