22 I am afraid that I must totally disagree with the conclusions of the learned Magistrate in relation to the defence of provocation. Here the appellant was clearly deprived by provocation of the power of self-control. Whether that provocation was occasioned by a blow struck to him or by the extremely provocative behaviour of Ms Nichols on the day in question does not, for present purposes, matter. In my view, the events occurring as quickly as they did supported the defence proposition at trial that what the appellant had done was "on the sudden and before there was time for his passion to cool" within the meaning of s 246 of the Criminal Code. It was, in my view, unrealistic for the learned Magistrate to take the view that there was time for the appellant's passion to cool in the altercation, the total period of which lasted no longer than 47 seconds. I therefore find it impossible to see how the learned Magistrate could have found the defence of provocation to have been negatived by the prosecution. In my view, on the whole of the evidence which was before the learned Magistrate, there must have been a reasonable doubt as to the guilt of the appellant. Whilst the learned Magistrate may have generally preferred the evidence of prosecution witnesses, he made an erroneous conclusion in relation to the importance of McQuillan's evidence. Further, the rapidity of the events that occurred from the time of Ms Nichols' entry into the office until the time she was struck, ought to have left him with a reasonable doubt as to the guilt of the appellant. Insofar as the defence of provocation was raised, the learned Magistrate could not, in my view, have been satisfied beyond reasonable doubt that it was negated by the prosecution: see generally Harling (1997) 94 A Crim R 437 per Anderson J at 443.