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 void as against any subsequent purchaser. Assignment in Great Britain must be in writing, and previous to the new code with entry at Stationers' Hall, in the case of performing right as well as of copyright. It should be noted that playright does not pass with copyright ipse facto, though the new code as adopted by the House of Commons has no specific provision on this point. But it is most desirable that in any transfer of copyright or playright the exact nature of the right transferred should be defined in the writing. A partial assignment, or license, of performing right as well as of copyright may be made, and will be protected by the courts. The right to grant a specific license, and to enforce its limitations, was upheld in 1892 in Duck v. Mayen, in an English court by Justice Day, who held that where the defendant had obtained license at the price of one guinea to play "Our boys" for charity at a music hall, but performed it elsewhere, though for the same charity, the usual royalty of five guineas must be paid. Assignment in Canada and Newfoundland must be in writing in duplicate copies, of which one must be deposited in the office of copyright.

The general principles as to infringement and fair use, treated fully in another chapter, apply to dramatic and musical compositions, as already illustrated above, but some special applications may here be noted. That a parody or burlesque may not be an infringement, though including some quotations from the work parodied, was decided in 1903, in Bloom v. Nixon,—where Fay Templeton had given a parody or imitation of another actress's singing of "Sammy" in the "Wizard of Oz,"—in the U. S. Circuit Court in Pennsylvania by Judge McPherson, who held that as this was essentially an imitation of personality, it was not an infringement of copyright: "Surely a parody