520 COPYRIGHT
an extent as to affect prejudicially the owner of the copyright; or
(c) by way of trade exhibits in pubUc; or
{d) imports for sale or hire into any part of His Majesty's dominions to which this Act extends, any work which to his knowledge infringes copyright or would infringe copyright if it had been made within the part of His Majesty's dominions in or into which the sale or hiring, exposure, offering for sale or hire, distribution, exhibition, or importation took place.
(3) Copyright in a work shall also be deemed to be in- fringed by any person who for his private profit permits a theatre or other place of entertainment to be used for the performance in public of the work without the consent of the owner of the copyright, unless he was not aware, and had no reasonable ground for suspecting, that the per- formance would be an infringement of copyright. Term of 3- The term for which copyright shall subsist shall, ex-
copyright cept as otherwise expressly provided jby this Act, be the life of the author and a period of fifty years after his death:
Provided that at any time after the expiration of twenty- five years, or in the case of a work in which copyright sub- sists at the passing of this Act thirty years, from the death of the author of a published work, copyright in the work shall not be deemed to be infringed by the reproduction of the work for sale if the person reproducing the work proves that he has given the prescribed notice in writing of his intention to reproduce the work, and that he has paid in the prescribed manner to, or for the benefit of, the owner of the copyright royalties in respect of all copies of the work sold by him calculated at the rate of ten per cent, on the price at which he publishes the work; and, for the purposes of this proviso, the Board of Trade may make regulations prescribing the mode in which notices are to be given, and the particulars to be given in such notices, and the mode, time, and frequency of the payment of royal- ties, including (if they think fit) regulations requiring pay- ment in advance or otherwise securing the payment of royalties.
