Approval under section 35(1)(ii) grants research-institution tax-approved status subject to prescribed accounting and reporting conditions. Approval is granted to the Centre for Earth Science Studies, Trivandrum as an approved institution under the specified tax provision for the period 1-4-1986 to 31-3-1987, subject to conditions: maintain separate research accounts; furnish annual research returns by 30 April; submit audited accounts and balance sheet to the prescribed authority by 30 June with copies to the Commissioner of Income-tax; and apply three months before expiry for extension.