S. 148 : Reassessment-Notice-Notice through his Chartered Accountant-No notice was issued within period of limitation-Service of notice to Chartered Accountant was not valid service of notice-High Court quashed the reassessment notice-SLP delay of 327 days-Explanation rendered for delay was not satisfactory, SLP was dismissed on ground of delay and laches. [S. 149(1)(b), Art. 136]