... clearly proved that, at the time of committing the act, the accused was labouring under such a: (i) defect of reason and... (ii) disease of the mind that deprived the defendant of the ability or power to reason... (iii) as to not know the nature and quality of the act he was doing or, if he did know it, that he did not know he was doing what was wrong. If the accused was conscious that the act was one that he ought not to do, and if the act was at the same time contrary to the law of the land, he is punishable. 4. A person under a partial delusion is to be considered as if the facts with respect to which the delusion exists were real. Daniel M'Naghten himself was tried and acquitted on the grounds of insanity and committed to Bethlehem Hospital. It is extremely interesting that if M'Naghten himself were ...

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