S. 147 : Reassessment – After the expiry of four years- Share capital – At the stage of re-opening, only a reason to believe should exist with regard to escapement of income. Definite conclusion would be drawn after raising queries upon the assessee in the light of S. 68 of the Act- Reopening is held to be justified -Sanction -Not required to provide elaborate reasons while approving the sanction -Succession – No requirement to issue two separate notices in name of amalgamated company as successor-in-interest of amalgamating company and to amalgamating company in its individual capacity, [ S.68, 148 ,151 170, Art , 226 ]