§ 4. Any private business which has been set down for consideration at Seven o'clock on an allotted day shall, instead of being considered as provided by the Standing Orders, be considered at the conclusion of the Proceedings on the Bill on that day, and paragraph (1) of Standing Order No. 3 (Exempted business) shall apply to the private business for a period of three hours from the conclusion of the Proceedings on the Bill, or, if those Proceedings are concluded before Ten o'clock, for a period equal to the time elapsing between Seven o'clock and the completion of those Proceedings.