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The PREserved Context Index System (PRECIS) developed for subject indexing for the British National Bibliography is discussed as a basis for various studies relating to classification which could be made from its initial phrases, strings, entries and back‐up structure. Specific possibilities include use of methodologies such as Goffman's “indirect method,” Fox's “characterization” of rules, derivation of empirical hyperbolic distributions, and lognormal distributions. The relationship of existing methods of subject analysis to each other through PRECIS is explored. Brief samples are included.

With preceding chapters setting the stage, this one will provide a view of Brian C. Vickery's accomplishments from the vantage point of several thousand miles. His career in information science has been an impressive one. What has made it so? To answer that question, it is first necessary to examine his research accomplishments, then their impact, which has spread farther than might have been anticipated at the time of their publication.

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