S. 69 : Un explained investments-Search and seizure-Undisclosed income-Seized documents showing receipts and payments-Assessee in real estate business-Cannot be identified whether money used for purchase of land or loan-Profit at 10% to meet end of justice-Seized documents showing receipts and payments-Additions cannot be made on receipts and payments both-Agricultural Income-No evidence of agricultural activity-Receipt cannot be treated as sale of agricultural property-Cash receipts-Declared in original return-Cannot be taxed again in absence of contrary materials. [S. 132]