Colon Classification Edition 7 (1971): A Preview

The field of library classification is the Universe of Subjects. Its purpose is to arrange subjects in a linear sequence helpful to the majority of readers and to mechanise the arrangement by representing each subject by a unique Ordinal Number. The increase in the extension, depth, and proliferation of the Universe of Subjects is now accelerating at a great rate. Twelve modes of formation of subjects are described. Six species of schemes are defined beginning with a purely enumerative one and ending with a Freely Faceted analytico-synthetic one. Version 3 of Colon Classification given in Ed 7 (1971) is now the only representative of the Freely Faceted scheme.