The county councillors of a county council elected at the first election shall retire from office on the ordinary day of election in the third year after the passing of this Act, and their places shall be filled by election.

Of the first county aldermen one half shall retire on the ordinary day of election of county aldermen in the third year next after the passing of this Act, and the one half who are so to retire shall be determined by ballot by the provisional councillors at the time of the election of the county aldermen: Provided that where the total number of aldermen is not divisible by two the larger half shall first retire.

The remaining half of the county aldermen shall retire on the ordinary day of election of county aldermen in the sixth year next after the passing of this Act.

In this section the word " year " shall be construed to mean calendar year.