"Dupin!" I said, completely unnerved; "this hair is most unusual—this is no human hair." "I have not asserted that it is," said he; "but, before we decide this point, I wish you to glance at the little sketch I have here traced upon this paper. It is a fac-simile drawing of what has been described in one portion of the testimony as 'dark bruises, and deep indentations of finger nails,' upon the throat of Mademoiselle L'Espanaye, and in another, (by Messrs. Dumas and Etienne,) as a 'series of livid spots, evidently the impression of fingers.' "You will perceive," continued my friend, spreading out the paper upon the table before us, "that this drawing gives the idea of a firm and fixed hold. There is no slipping apparent. Each finger has retained—possibly until the death of the victim—the