[Ordinances of the] City of Little Rock, [§ 344. That it shall be unlawful for any person to engage in, exercise or pursue any of the following avocations or business without first having obtained and paid for a license therefor from the proper city authorities the amount of which licenses are hereby fixed as follows, to wit: . . . ]§ 27. Shooting galleries, or pistol galleries, $25 per annum, in advance.