This had the extraordinary and contradictory effect of giving the author control over the finer reproductions of his works but denying to him any control over the cruder reproductions, as on hand-organs, orchestrions, etc. The opposition which developed against this impossible situation was largely influential in bringing about the modification at Berlin in 1908 of the Berne clause. The law of May 22, 1910, amended the previous general laws in conformity with the Berlin convention, especially by extending protection to the mechanical reproduction of music and cinematograph reproduction of artistic works. Section 22 of the law of 1901 was specifically replaced by an elaborate section, modeled on the American compulsory license provision and requiring a composer who permitted mechanical reproduction to grant similar rights on equal terms to any other manufacturers domiciled in Germany, with provisions for reciprocity and for the treatment of non-German composers through the tribunals of Leipzig. This law became effective coordinately with the Berlin convention on September 9, 1910, and in connection with it an ordinance promulgated by the Emperor July 12, 1910, defined the time during which mechanical reproductions already made of copyrighted works should still be permitted. The use of extracts from musical as from other works, as perhaps in _potpourris_, seems however still to be permitted as a result of the law of 1901. {Sidenote: Germany and the United States} As a result of the reciprocal provisions of the new German law, the President of the United States on December 8, 1910, proclaimed reciprocal relations between Germany and the United States with reference to mechanical reproductions of music. In the opinion of May 6, 1911, approved by the Attorney-General, a Presidential proclamation is required to determine "the existence of reciprocal conditions" as to the mechanical music provision (sec. 1, e) as in respect to sec. 8; but as the proclamation of December 8 did not recite that reciprocal conditions existed between September 9 and December 8, 1910, it is held that "it would not afford evidence sufficient to sustain an action for infringement between said dates." {Sidenote: French precedents}