"(4, _a_) _Books._--This term includes all printed literary works (except dramatic compositions) whether published in the ordinary shape of a book or pamphlet, or printed as a leaflet, card, or single page. The term 'book' as used in the law includes tabulated forms of information, frequently called charts; tables of figures showing the results of mathematical computations such as logarithmic tables; interest, cost, and wage tables, etc., single poems, and the words of a song when printed and published without music; librettos; descriptions of moving pictures or spectacles; encyclopaedias; catalogues; directories; gazetteers and similar compilations; circulars or folders containing information in the form of reading matter other than mere lists of articles, names and addresses, and literary contributions to periodicals or newspapers." {Sidenote: Exclusions defined} On the other hand, definitions are made negatively that: "(5) The term 'book' can not be applied to-- "Blank books for use in business or in carrying out any system of transacting affairs, such as record books, account books, memorandum books, diaries or journals, bank deposit and check books; forms of contracts or leases which do not contain original copyrightable matter; coupons; forms for use in commercial, legal, or financial transactions, which are wholly or partly blank and whose value lies in their usefulness and not in their merit as literary compositions. "Directions on scales, or dials, or mathematical or other instruments; puzzles; games; rebuses; labels; wrappers; formulae on boxes, bottles, and other receptacles of articles for sale or meant to accompany such articles. "Advertisements or catalogues which merely set forth the names, prices, and places where articles are for sale. "Prefaces or other introductory matter to works not themselves entitled to copyright protection, such as blank books. "Calendars are not capable of registration as such, but if they contain copyrightable reading matter or pictures they may be registered either as 'books' or as 'prints' according to the nature of the copyrightable matter." The Rules also make the following negative definitions: "(12) No copyright exists in toys, games, dolls, advertising novelties, instruments or tools of any kind, glassware, embroideries, garments, laces, woven fabrics, or any similar articles." The definition of other classes of subject-matter given in the new Rules and Regulations of the Copyright Office, including that of maps, will be found in the chapters on dramatic and musical copyright and on artistic copyright. {Sidenote: Blank books}