{Sidenote: Buenos Aires conference and convention, 1910} At the fourth Pan American conference, held at Buenos Aires in 1910,--twenty powers, including all the South American countries except Bolivia, being represented,--the fourth copyright convention was signed August 11, 1910. It undertakes to "acknowledge and protect the rights of literary and artistic property," and includes (art. 2) with dramatic and musical works those of a choregraphic character. It retains (art. 4) the definition of the scope of copyright. The provision as to the indicated author is continued (art. 5) in more precise language. It substitutes for the previous cumbrous method the simple provision (art. 3) "the acknowledgment of a copyright obtained in one State, in conformity with its laws, shall produce its effects of full right in all the other States without the necessity of complying with any other formality, provided always there shall appear in the work a statement that indicates the reservation of the property right." It continues (art. 6) the Mexico provisions as to copyright duration. The country of origin is further defined (art. 7) as "that of its first publication in America," and in case of simultaneous publication in several of the signatory countries, then that having the shortest term of protection. It specially provides (art. 8) that a work shall not acquire copyright through subsequent editions. It continues also (art. 9) the provisions for copyright in translations. It provides (art. 11) for the protection of "literary, scientific, or artistic writings, ... published in newspapers or magazines." But other articles may be freely reproduced, on acknowledgment of the source, which, however, is not required for "news and miscellaneous items published merely for general information,"--the provisions as to extracts in journals for public instruction or chrestomathy (art. 12) and those as to public addresses (art. 10) subject, however, to the internal laws of each state, being continued. The provisions as to unlawful reproduction (art. 13) are continued, and seizure of pirated copies (art. 14), police powers (art. 15) and provisions for ratification (art. 16) are the same as in the Mexico convention, except that the ratifications and denouncements are to be communicated to the Argentine government. This treaty, approved by the United States Senate, February 16, 1911, and signed by the President, waits other ratification to become effective. {Sidenote: Attorney-General's opinion on ratification} {Sidenote: Relation with importation provisions}