MRS. MARGARET D., Washington boulevard; house entered; $200 worth of property taken. MRS. WARREN F. H., Warren avenue; house entered; $500 worth of property taken. MRS. CHARLES C., Washington boulevard; hearing a noise at her front door, went onto the porch; a burglar who had been trying to force an entrance into the second story dropped at her side, revolver in hand; he escaped, frightening off pursuers with his revolver. DR. F. F. S., West Monroe street and Homan avenue; two men attempted to hold him up in his office; frightened away by the arrival of a patient. PROF. CHARLES E. W., Chicago Piano college; chased by mounted foot pad. MRS. ELIZABETH H. T., M. D., Warren avenue; swindled out of $60 by men who had a 'sure thing' on the races. JOHN V., West Monroe street; swindled by same game. WILLIAM H. P., bookkeeper for C. S. & Co., West Monroe street; house robbed. HERMAN W., West Monroe street; house robbed of diamonds, jewelry and silverware; Mrs. W. coming home, encounters robbers as they were leaving; they politely raised their hats and walked on. H. S. B., real estate, West Adams street; candidate for president of M. club; house robbed. ARTHUR W. C., Illinois Credit Company, West Adams street; house robbed. JOHN G., grocer; attempt made to swindle him out of $100 by men with 'tip' on races. The above list was obtained by a brief canvass of the neighborhood. The house given as the abode of the "thieves" is situated right in this neighborhood, which is one of the best residence districts. It is a gray stone structure and is said to be owned by a well known West side politician. In this place lives at least one of the men who have swindled numerous West side residents of this district by means of the 'tips' on the races. These men, it is said, have operated successfully for a year, few of their victims making complaint on account of the unenviable publicity the affair would thus attain. This gang, too, has headquarters in a West Madison street block within a few doors of the Fern store. This neighborhood is included in the Warren avenue police district. None of the officers at this station, or any of the Central station detectives familiar with the case, believes that the 'jockeys' have anything to do with the 'holdups' and robberies of flats, and laugh at the idea advanced by the author of the letter to The J--." The names and addresses of these victims are printed in full in the newspaper referred to, but for obvious reasons they are not used in reproducing the article. Immediately following the publication of this startling list of crimes, a grand jury submitted to the court the following report. The reader can harmonize, as best he may, this official statement, with that of a lighthearted and self satisfied Mayor who controls, or does not control, as one's thought may elect, the Chicago police force.