American copyright treaty, was adopted, and signed August 23, 1906, but this was really not so much a new treaty, as a supplementary convention providing for the development and regulation of international bureaus at Havana and Rio de Janeiro, and its provisions were never put into operation. A fourth Pan American copyright treaty, distinct from patent and trade-mark protection, was adopted at the Pan American conference at Buenos Aires in 1910 and signed August 11, 1910. The Mexico copyright convention was not ratified by the Senate of the United States until 1908 and was proclaimed by the President, April 9, 1908; the Rio convention has never been accepted by the United States; the Buenos Aires convention, replacing that of Mexico, was promptly approved by the U. S. Senate, February 16, 1911, but is yet to be acted upon by the other countries.
Mexico City
conference,
1902
At the Pan American conference held in Mexico City in 1902, the second copyright convention was signed January 27, 1902, by representatives of Argentina, Bolivia, Colombia, Costa Rica, Chile, the Dominican Republic, Ecuador, Salvador, Guatemala, Haiti, Honduras, Mexico, Nicaragua, Paraguay, Peru, Uruguay and the United States, the delegates of Nicaragua, Paraguay and the United States acting ad referendum.
Mexico
convention,
1902
The first article of the Mexico convention formed the signatory states into "a Union for the purpose of recognizing and protecting the rights of literary and artistic property," which was defined (art. 2) as including "books, manuscripts, pamphlets of all kinds, no matter what subject they may treat of and what may be the number of their pages; dramatic or melo-dramatic works; choral music and musical compositions, with or without words, designs, drawings, paintings, sculpture, engravings, photographic works;
