"In addition to the protocol for the adhesion of the American Republics to the Convention of The Hague, the treaty of compulsory arbitration signed by nine delegations, and the treaty for the arbitration of pecuniary claims, the Conference agreed to and signed a treaty for the extradition of criminals, … including a clause making anarchy an extraditable offense when it shall have been defined by the legislation of the respective countries; a convention on the practice of the learned professions, providing for the reciprocal recognition of the professional diplomas and titles granted in the several Republics; a convention for the formation of codes of public and private international law; … a convention on literary and artistic copyrights; … a convention for the exchange of official, scientific, literary, and industrial publications; … a treaty on patents of invention, etc.; … and a convention on the rights of aliens." The treaty on patents and the convention on the rights of aliens could not be signed by the delegates of the United States, for reasons set forth in their report. "The delegates desire especially to express their most grateful appreciation of the courtesy extended by the Mexican Government in preparing for the comfort of delegates and in all the arrangements for the conference. Every convenience at the command of that Government was placed at the disposal of delegates to assist them in the discharge of their labors. … "It is the belief of the delegates of the United States that the results of the Second International American Conference will be of great and lasting benefit to the nations participating in its deliberations. … That the relations between the American Republics have been improved as a result of the conference cannot be doubted. The intimate daily association for nearly four months, of leading men from every American Republic of itself tended toward this result. Delegates learned that, while existing international relations made differences of opinion inevitable between the representatives of some of the countries, they all had many interests in common. As a result, toleration for the opinions of others was shown by delegates to a marked degree, and the sessions of the conference were remarkably free from acrimonious debates and reflections on the policies of delegations or their Governments." _57th Congress, 1st Session 1901-1902, Senate Document 330._ AMERICAN REPUBLICS: Their Third International Conference, at Rio de Janeiro, Brazil, in 1906. Proceedings, conventions, resolutions.