S.147: Reassessment-After the expiry of four years- Income from Mushroom Cultivation as Agricultural Income. The ground that the petitioner had failed to disclose all the relevant material was not incorporated in the reasons supplied to the petitioner- Court directed the Counsel to furnish the compilation of judgments on reassessment proceedings to the Commissioner to study the same. Even for reopening the assessment with in four years there are certain jurisdictional requirements that must exist before the power of reassessment is exercised .Strictures passed against the AO for making comments which are highly objectionable and bordering on contempt and for being oblivious to law. [ S. 2(1A), 10(1),148 ]