(2)If, in the opinion of the District Magistrate, any person who has been nominated has a direct interest in the matter under reference, or is otherwise disqualified for nomination, or if the services of any such person are not immediately available as aforesaid, and if the [Board] [Substituted by Act 24 of 1936, S.69, for "Cantonment Authority" ] or other person by whom any such person was nominated fails to nominate another member within seven days from the date on which it or he may be called upon to do so by the District Magistrate, such failure shall be deemed to constitute a failure to make a nomination within the meaning of section 262.