A doctor's space may be granted to a doctor who by the emergency nature of his work must have a parking space close to his place of business. A doctor's space may be obtained by securing a permit from Council for which a fee of twenty dollars ($20.00) per calendar month in advance will be paid to the City Collector and Treasurer within ten days after the first day of each month. Council is the sole judge as to which doctors are entitled to doctor's spaces and may withdraw such permit at any time.