4.(1) Such pension or gratuity may be granted in addition to any pension or gratuity payable to the officer or his wife or child as the case may be, under any general or special orders of the ¹[Government], but shall not ²[* * *], exceed the amount of the pension or gratuity to which the officer or his wife or child would have been entitled under any such orders if his employment by the local authority had been service for the same time and on the same pay of the ³[Republic]. (2) Any pension granted under this Act may be made to take effect from such date subsequent to the 4th day of August, 1914, and subject to such conditions as the local authority may think fit.