If any one, wishing to use a given form of title but desiring to avoid possible duplication of one previously used, writes to the Copyright Office asking whether such a title has already been recorded, an answer is made stating what is disclosed by the indexes of the office. It must be frankly explained, however, that an absolutely conclusive statement as to whether a given title has been previously used cannot always be given. The copyright records of entries of title previous to July 10, 1870, are but indifferently indexed and rarely by title, usually only under names of proprietors of the copyright. The copyright entries since July 10, 1870, to May 31, 1901, number 1,217,075. The index to these entries consists of more than 600,000 cards, many of which contain a number of entries. These cards index the entries primarily under the names of the proprietors of the copyright, and this proprietor's index is understood to have been kept up continuously and to be complete, so that under the name of each copyright proprietor there is a card or cards showing the titles of all articles upon which copyright is claimed. In addition to the proprietor's index there are cards under the titles of periodicals and under the leading catchwords of the titles of other articles, besides cards under the authors' names for books. Unhappily there are periods of time when what may be called the subsidiary index cards were not kept up. In addition to cards under the proprietors' names, cards are now made: for _books_, under the names of their authors; for _anonymous books_, _periodicals_ and _dramatic compositions_, under the first words of the titles (not a, an, or the), and for _maps_, under the leading subject words of the titles, _i.e._, the names of the localities mapped. It is doubtful if an absolutely complete index of all copyright entries by the _title_ of the book and other article--in addition to the cards at present made--could be justified by even a possibly legitimate use of such an index. When it is remembered that the copyright entries last year numbered 97,967, the magnitude of the task of making several cards for each entry is easily conceived, and it is a question whether it could be rightfully imposed upon the Copyright Office under the present provisions of the law and so long as the registration of a title does not secure the use of that title to some one person to the exclusion of all others. 8. _Amendment of the copyright law._