A dash connecting numbers signifies to and including; following a number it signifies continuation. A ? following a word or entry signifies probably. Brackets inclose words added to titles or imprints, or changed in form. Arabic figures are to be used rather than Roman; but small capitals may be used after the names of sovereigns, princes, and popes. A list of abbreviations to be used was given in the Library journal, Vol. 3: 16-20. ARRANGEMENT. The surname when used alone precedes the same name used with forenames; where the initials only of the forenames are given, they are to precede fully written forenames beginning with the same initials (_e. g._, Brown, Brown, J.; Brown, J. L.; Brown, James). The prefixes M and Mc, S., St., Ste., Messrs., Mr., and Mrs., are to be arranged as if written in full, Mac, Sanctus, Saint, Sainte, Messieurs, Mister, and Mistress. The works of an author are to be arranged in the following order: 2. Partial collections. 3. Single works, alphabetically, by the first word of the title. The order of alphabeting is to be that of the English alphabet. The German ae, oe, ue, are always to be written as ae, oe, ue, and arranged as a, o, u. Names of persons are to precede similar names of places, which in turn precede similar first words of titles. A few desirable modifications or additions to these rules may be suggested. 1. In title-entries, let the year of publication stand last, instead of the indication of size. 2. Noblemen to be entered under their family names, with reference from their titles. 3. Instead of designations of title, profession, residence, or family, to distinguish authors, let every name be followed by the chronology, as-- James (Henry) 1811-82. James (Henry) 1843- It is highly desirable to give this information as to the author's period in every title-heading, without exception, when ascertainable. If unknown, the approximate period to be given, with a query. 4. All titles to be written in small letters, and printed in lower case, whether in English, German, or any other language, avoiding capitals except in cases named in the rule. 5. Works without date, when the exact date is not found, are to be described conjecturally, thus: [1690?] or [about 1840.] 6. In expressing collations, use commas rather than the sign + between the pagings, as--xvi, 452, vii pp.--not xvi+452+vii pp. 7. Forenames should be separated from the surnames which precede them by parenthesis rather than commas, as a clearer discrimination: as-- Alembert (Jean Baptiste le Rond d')--not Alembert, Jean Baptiste le Rond d'. The printed catalogue of the British Museum Library follows this method, as well as that in the preceding paragraph.