18. The term of office of a member of the Legislative Council of a Province, other than a member chosen to fill a casual vacancy, shall be nine years, but upon the first constitution of the Council the Governor in his discretion shall make by order such provision as he thinks fit, by curtailing the term of office of some of the members then chosen, for securing that, as nearly as may be, one-third of the members holding seats of each class shall retire in every third year thereafter.
A member chosen to fill a casual vacancy shall be chosen to serve for the remainder of his predecessor’s term of office.