Section 3. After section 28 _

3. After section 28 06 the principal Act, the fol1o:ving section shall be inserted, namely: - "28A. Subject to such conditions as may be specified by the Central Governinei~t, where the Board is of opinion that any amount due to, or any loss, tvhzther of money or of. property; incurred by, the0Board is; irrecoverable, the Board may. with the previous approval of the Central Government, sanction the writinp off finallv of the said amount or loss: Writing off of `losses.` Provided that no such approval of the Central Government shall `be` necessary where such irrecoverable amount or loss does `not` exceed in any individual case and in the aggregate in any year sllch amounts as may be prescribob.".