In New Guinea the Queensland Criminal Code is in force having been adopted by the Laws Repeal and Adopting Ordinance, 1921- 1939, s. 13. But, so far as I am aware, no provisions similar to The Criminal Code Act (Q.) have been enacted for the Territory. Nor, on the other hand, are there, so far as I know, any provisions similar to those of Tasmania expressly preserving common law defences. It seems to me, however, that the absence of an express retention of the common law does not mean that it has been entirely displaced by the Code except where the Code covers the whole of the ground. The rules and principles of the common law, as modified by statute in England before 9th May, 1921, are in force in the Territory so far as not abrogated by later legislation in force there: Booth v. Booth [1935] HCA 15; (1935) 53 CLR 1, at pp 29, 30 . Therefore, as I understand the position, any rule or principle of the common law which can stand with and give an actual content to any provision of the Code is to be regarded in construing and applying the Code. I therefore read s. 291 of the Code as having the effect that a homicide which is excused by any rule or principle of the common law is not unlawful in the Territory. I do not find anything in the Code which narrows the excuses for homicide which the common law allows, or which would make punishable any homicide which the common law would treat as guiltless. By the common law a homicide has, for centuries, been excused if it occurred by misadventure, per infortunium, or as some of the early writers, including Hale, put it, was "simply casual". In modern terminology this may be rendered as "by accident" or "accidental". But the common law excused only such homicides as were the accidental consequences of lawful and careful acts. Thus it was that Hale said that if a man "strike at one, and missing him kills another, whom he did not intend, this is felony and homicide, and not casualty or per infortunium": Hale, Pleas of the Crown I, at p. 39. If that statement, unqualified and unexplained, expressed the rule of the common law today, then the accused in the present case could find no exculpation in the common law. But the early common law doctrines of felonymurder and transferred malice have been much modified by judicial development in the course of years. I tried to explain these developments and the state of the law today in what I wrote in Mamote-Kulang's Case (1964) 111 CLR, at p 79 , and in Ryan v. The Queen [1967] HCA 2; (1967) 40 ALJR 488, at p 503 . So far as relevant to the present matter, I think it correct to say that by the common law today an unintended, wholly unexpected and unlikely killing is manslaughter if, but only if, it be the result of some act which is both unlawful and in the circumstances dangerous, or is the result of some conduct amounting to reckless negligence. The only thing which would stand in the way of the killing of the child in the present case being excusable by the common law is that in striking at his wife the accused was attempting to commit an unlawful act - unlawful by virtue of Native Administration Regulations, 1924 (as amended), reg. 83. Whether in this case provocation by the wife could have exonerated the accused had his attempt at chastisement been effective need not be considered. He made an attempt to do an unlawful act. But there is nothing to shew that it was an act of such a character as, within the present-day doctrine of the common law, would render inexcusable the unintended and unexpected killing of the child. Nor is there any finding that the killing was the result of criminal negligence; and the facts as found would not, it seems, have supported such a finding. I think, therefore, that the killing of the child was, within the meaning of s. 291 of the Code, excused by law, meaning by the common law. (at p60)