Section 60. For the purpose of convenience in local government, the legislature may divide the municipality into wards, and this power is usually delegated to the common council, and in the division the principle of equality of representation must be observed as far as practicable.

Pleasant vs. Beckwith, 100 U. S., 514; See Am. & Eng. Ency. of Law, |Vol. 15, page 1016, and cases cited.