Necessity of restricting the investigation to the more important modes of conduct with which the moral consciousness is concerned, p. 327 _sq._--The six groups into which these modes of conduct may be divided, p. 328.--The most sacred duty which we owe to our fellow-creatures generally considered to be regard for their lives, _ibid._--Among various uncivilised peoples human life said to be held very cheap, p. 328 _sq._--Among others homicide or murder said to be hardly known, p. 329 _sq._--In other instances homicide expressly said to be regarded as wrong, p. 330 _sq._--In every society custom prohibits homicide within a certain circle of men, p. 331.--Savages distinguish between an act of homicide committed within their own community and one where the victim is a stranger, pp. 331-333.--In various instances, however, the rule, "Thou shalt not kill," applies even to foreigners, p. 333 _sq._--Some uncivilised peoples said to have no wars, p. 334.--Savages' recognition of intertribal rights in times of peace obvious from certain customs connected with their wars, p. 334 _sq._--Savage custom does not always allow indiscriminate slaughter even in warfare, p. 335 _sq._--The readiness with which savages engage in war, p. 337.--The old distinction between injuries committed against compatriots and harm done to foreigners remains among peoples more advanced in culture, p. 337 _sq._--The readiness with which such peoples wage war on foreign nations, and the estimation in which the successful warrior is held, pp. 338-340.--The life of a guest sacred, p. 340.--The commencement of international hostilities preceded by special ceremonies, _ibid._--Warfare in some cases condemned, or a distinction made between just and unjust war, pp. 340-342.--Even in war the killing of an enemy under certain circumstances prohibited, either by custom or by enlightened moral opinion, pp. 342-344. CHAPTER XV HOMICIDE IN GENERAL (_continued_)