word "possession" means exclusive possession and the word "control" means effective control but this does, not solve the problem. As we said earlier, the first precondition for an offence under Section 25(1)(a) is the element of intention, consciousness or knowledge with which a person possessed the firearm before it can be said to constitute an offence and secondly that possession need not be physical possession but can be constructive, having power and control over the gun, while the person to whom physical possession is given holds it subject to that power and control. In any disputed question of possession, specific facts admitted or proved will alone establish the existence of the defacto relation of control or the dominion of the person over it necessary to determine whether that person was or was not in possession of the thing in question. In this view it is difficult at this stage to postulate as to what the evidence will be and we do not therefore venture to speculate thereon. In the view we have taken, if the possession of the appellant includes the constructive possession of the firearm in question then even though he had parted with physical possession on the date when it was recovered, he will nonetheless be deemed to be in possession of that firearm. If so, the charge that he was in possession of the revolver on 17-9-1966 does not suffer from any defect particularly when he is definitely informed in that charge that he had control over that revolver. It is also apparent that the words 'on or before' were intended to bring home to the accused that he was not only in constructive possession of it on 17-9-1966 but that he was in actual physical possession of it prior to that date when he gave it to Miron. It is submitted, however that the word 'on or before' might cause embarrassment and prejudice to the defence of the accused because he will not be in a position to know what the (sic) actually intends to allege. From a reference of Form XXVIII of Schedule 5 of the CrPC, the mode of charging a person is that he 'on or about'...did the act complained of. In