§ 178. The Declaration of Paris did not touch upon the old rule that private enemy vessels and private enemy goods thereon may be seized and appropriated, and this rule is, therefore, as valid as ever, although there is much agitation for its abolition. In 1785 Prussia and the United States of America had already stipulated by article 23 of their Treaty of Friendship[349] that in case of war between the parties each other's merchantmen shall not be seized and appropriated. Again, in 1871 the United States and Italy, by article 12 of their Treaty of Commerce,[350] stipulated that in case of war between the parties each other's merchantmen, with the exception of those carrying contraband of war or attempting to break a blockade, shall not be seized and appropriated. In 1823 the United States had already made the proposal to Great Britain, France, and Russia[351] for a treaty abrogating the rule that enemy merchantmen and enemy goods thereon may be appropriated; but Russia alone accepted the proposal under the condition that all other naval Powers should consent. Again, in 1856,[352] on the occasion of the Declaration of Paris, the United States endeavoured to obtain the victory of the principle that enemy merchantmen shall not be appropriated, making it a condition of their accession to the Declaration of Paris that this principle should be recognised. But again the attempt failed, owing to the opposition of Great Britain. [Footnote 349: See Martens, _R._ IV. p. 37. Perels (p. 198) maintains that this article has not been adopted by the Treaty of Commerce between Prussia and the United States of May 1, 1828; but this statement is incorrect, for article 12 of this treaty--see Martens, _N.R._ VII. p. 615--adopts it expressly.] [Footnote 350: See Martens, _N.R.G._ 2nd Ser. I. p. 57.] [Footnote 351: See Wharton, III. § 342, pp. 260-261, and Moore, VII. § 1198, p. 465.] [Footnote 352: See Wharton, III. § 342, pp. 270-287, and Moore, VII. § 1198, p. 466.] At the outbreak of war in 1866, Prussia and Austria expressly declared that they would not seize and appropriate each other's merchantmen. At the outbreak of the Franco-German War in 1870, Germany declared French merchantmen exempt from capture, but she changed her attitude when France did not act upon the same lines. It should also be mentioned that already in 1865 Italy, by article 211 of her Marine Code, enacted that, in case of war with any other State, enemy merchantmen not carrying contraband of war or breaking a blockade shall not be seized and appropriated, provided reciprocity be granted. And it should further be mentioned that the United States of America made attempts[353] in vain to secure immunity from capture to enemy merchantmen and goods on sea at the First as well as at the Second Hague Peace Conference. [Footnote 353: See Holls, _The Peace Conference at the Hague_, pp. 306-321, and Scott, _Conferences_, pp. 699-707.]