In addition to the regular certificates in card form, the Copyright Office also issues certificates in quarto shape when desired, which are especially utilized in court proceedings as parts of the record. {Sidenote: Searches} The Copyright Office makes searches for information, under the provisions of the new law, at the rate of fifty cents for each full hour of the person employed in such search. The new Rules provide for such searches as follows: "(49.) Upon application to the Register of Copyrights, search of the records, indexes, or deposits will be made for such information as they may contain relative to copyright claims. Persons desiring searches to be made should state clearly the nature of the work, its title, the name of the claimant of copyright and probable date of entry; in the case of an assignment, the name of the assignor or assignee or both, and the name of the copyright claimant and the title of the music referred to in case of notice of user." {Sidenote: Patent Office registry for labels} Question having been raised by the Commissioner of Patents whether the act of 1909 did not charge the Copyright Office with the registration as "prints" of labels, etc., the Attorney-General, in an opinion of December 22, 1909, held that the copyright act of 1909 did not relieve the Patent Office of this duty, and it is still required to register all prints which have heretofore been registered therein under the act of June 18, 1874, and in the same manner as they have heretofore been registered. Many of the features of the Copyright Office, such as the forms for applications, certificates, etc., have been treated in detail in the chapter on formalities, which should be read in connection with this chapter. {Sidenote: Foreign practice} In Great Britain there is no official copyright office, but registration has been made at Stationers' Hall in charge of the Stationers' Company, a _quasi_ public institution, while deposit is made primarily in the national library at the British Museum. The records at Stationers' Hall and the printed or other catalogues of the British Museum are public. But there is no printed copyright list except of prohibitions of importations issued by the Commissioners of Customs. Under the new British measure there is no registration at Stationers' Hall or elsewhere.