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 selection of the main heading for each book, but the CROSS-REFERENCES are of especial importance in the British Museum catalogue. Cross-references may be comprised under three chief heads: —

I. References from alternative forms of the same heading —

These are made (a) from any alternative, incomplete, inaccurate, or foreign form of a name, used in the book, to the form adopted for the heading.

Examples.

LUT. (Mar.). See Luther (Martin).

Saint Davids, William, Bishop of. See Laud.

Bartas (Guillaume de Saluste du). See Saluste du Bartas.

HOLLYBAND (Claudius). See Desainliens (C).

MUNCHEN. See Munich.

Ortulus. See Hortulus.

(b) From the name of any institution, periodical, &c., to any larger heading under which it is entered.

Examples.

BRITISH MUSEUM. See Academies, &c.-— London.

GEORGE HERIOT's HOSPITAL. See Edinburgh.— George Heriot's Hospital.

ACTA ERUDITORUM. See Periodical Publications. — Leipsic.

II. Cross-references of the second kind are made —

(a) When a book is entered under any heading other than the name of the author, from the name of the author to this heading.

(b) To a heading consisting of initials or a descriptive name from the heading under which the book would have appeared if the initials or descriptive name had been absent