VIII. As to the use of the caduceum, or staff with the figure of two snakes twisted around it, which ambassadors carried, when they sued for peace, it was a ceremony peculiar to the GREEKS, and not derived from the GENERAL law of nations. The ROMANS in the same manner had particular customs, such as using vervain in forming alliances, throwing a bloody spear, as a declaration of war, renouncing all former friendship and alliance at the expiration of thirty days, after satisfaction had been demanded and refused, and again throwing another spear. None of these PECULIAR customs ought to be confounded with the GENERAL law of nations. For Arnobius informs us, that in his time many of them had fallen into disuse, and even in the time of Varro some of them were omitted. The third Punic war indeed was not declared till the moment of its actual commencement. IX. A declaration of war, made against a sovereign, includes not only his own subjects, but all who are likely to become his associates, as thereby they make themselves accessories in the war. And this is what the modern lawyers mean, when they say that, in bidding defiance to a Prince, we bid defiance to all his associates. For they give the name of defiance to a declaration of war. By which is understood the war carried on with the power against whom it has been declared. Thus upon war being declared against Antiochus, there was no occasion for a separate declaration against the Aetolians, who had openly joined Antiochus. For, as the heralds in their answer justly observed, the Aetolians had, by that act, voluntarily brought war upon themselves. X. But if after the conclusion of such a war it should be deemed expedient to attack any other nation or king for having furnished supplies and assistance towards that war, a new declaration of war will be necessary. For that nation or king is then to be considered, not as an accessory, but as a principal enemy. And therefore it was with reason said, that the war of Manlius against the Galatians, and that of Caesar against Ariovistus, were not just wars according to the law of nations. For war was made upon them not as accessories, but as principals. So that for this purpose, as the law of nations would have required a declaration, in the same manner the Roman law would have required a new order of the Senate. For on the motion being made for the war with Antiochus, the question was also put, whether it should not at the same time be made with his adherents. The same rule also being observed against King Perseus, it must be understood, as including the adherents during all the time that war with those princes continued; and implicating all, who in reality gave them support.