Concealed Weapons, §531. It shall be unlawful for any person within the limits of the city of Evanston to carry or wear under his clothes or concealed about his person, any pistol, colt or slung shot, cross knucklet, or knuckles of lead, brass or other metal, or bowie knife, dirk, dagger, or any other dangerous or deadly weapon. . . § 537. The Mayor may grant to so many and such persons as he may think proper, licenses to carry concealed weapons, and may revoke any and all such licenses at his pleasure. § 538. Applications for such licenses shall be made to the city clerk, and when granted, the applicant therefor shall pay to the said clerk, for the use of the city, the sum of two dollars. § 539. Every such license shall state the name, age and occupation and residence of the person to whom it is granted.