The Deputy Clerk shall assist the City Clerk in the performance of his aforesaid duties, and shall exercise such powers and perform such duties when the City Clerk is present as the City Clerk may direct and, in the absence of the City Clerk or his inability to perform his duties in consequence of continued sickness or in other emergencies, the Deputy City Clerk shall have all the power and perform all the duties of the City Clerk. The Deputy City Clerk shall receive for all services required to be rendered by him a salary to be fixed by the Common Council.