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 by any finger other than the one which originally made it."

"Does the comparison require much time or labor?" asked D'Arnot.

"Ordinarily but a few moments, if the impressions are distinct."

D'Arnot drew a little black book from his pocket and commenced turning the pages.

Tarzan looked at the book in surprise. How did D'Arnot come to have his book?

Presently D'Arnot stopped at a page on which were five tiny little smudges.

He handed the open book to the policeman.

"Are these imprints similar to mine or Monsieur Tarzan's, or can you say that they are identical with either?"

The officer drew a powerful glass from his desk and examined all three specimens carefully, making notations meanwhile upon a pad of paper.

Tarzan realized now what was the meaning of their visit to the police officer.

The answer to his life's riddle lay in these tiny marks.

With tense nerves he sat leaning forward in his chair, but suddenly he relaxed and dropped back, smiling.

D'Arnot looked at him in surprise.

"You forget that for twenty years the dead body of the child who made those finger prints lay in the cabin of his father, and that all my [365]