1. In the instant Rule the petitioners challenge the legality and validity of the notice and / or letter dated 5/7-6-1976 and pray for writs directing the respondents namely the Corporation of Calcutta and its officers to forthwith issue in favour of the petitioner No. 1, a Co - operative Housing Society, sanction or permission to execute work in accordance with the plan submitted on June 26, 1974. The petitioners also pray for quashing and / or cancelling the impugned order of refusal of the plan for sanction dated June 26, 1974 as contained in the aforesaid Memo of the Corporation of Calcutta dated 5/7th June, 1976 and also a notice under S.416 of the Calcutta - Municipal Act dated July 15, 1976. The petitioners also Fray for other appropriate writs in the nature of prohibition and also suitable directions restraining the respondents from giving any effect or further effect to the said memo of refusal and the said notice under S.416 of the Calcutta Municipal Act .

2. The short fact concerning the instant Civil Rule is that the petitioner No. 1 is a Co - operative Society duly registered on 4th November, 1974 under the West Bengal Co - operative Society Registration Act, 1973 havi