I am the spirit of the plague, which walketh in darkness, and haunteth solitary places, and am familiar to the readers of Mrs. Radcliffe and Mr. M. G. Lewis. I am the genius of whom De Foe spoke in his romance of the "Sickness of London," and to whom he gave the name of "Grisly Greg." I am also the original of that shadowy personage who has been called the "Black Doctor." I have walked in darkness among men, from the time of Elizabeth even unto now, and have been followed by all who read of me, and believed in by such as were willing to be led by an unseen power. I am familiar to the lovers of romance, and have been followed by them in all places, from the great city down to
