(g)permit the delegation by [ * * * ] [The words the Board repealed by section 5(b) of the Bengal Excise (Amendment) Act, 1914 (Bengal Act No. 7 of 1914).] the Commissioner of a Division, the Excise Commissioner or the Collector, to any person or classes of persons specified in such notification, of any powers conferred or duties imposed upon [ * * * ] [The words it or repealed by section 5(c), ibid.] him by or under this Act.