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The Chemistry Code developed and used by the Chemical -Biological Coordination Center has now been available in published form for a decade. This publication, entitled "A Method for Coding Chemicals for Correlation and Classification", has been and is still being profitably employed by numerous information groups in the chemical industry. In our own office, there is a file of some 65,000 compounds coded by means of the so-called "NRC Chemical Code" described in the above-mentioned publication.Another of the intellectual products arising from that brave, premature venture into chemical-biological documentation, the CBCC, has now become available.Although it is a "posthumous" publication, many of the original contributors are still around, including the present author, to introduce the Code to its potential users.

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Abstracts and indexes constitute the most popular means of assuring adequate retrieval of the many thousands of papers published every year in the ever expanding field of medicine. Different types of abstracts and indexes are available for different purposes and to meet varying user requirements. The problem of “keeping up” with developments in one’s own field of endeavour can usually be solved by qualified abstractors. Most indexes serve the purpose of assuring the retrieval of pertinent documents. However, in order to retrieve specific pieces of information which are absolutely indispensible to the medical practitioner or scientist, a new approach is needed. This technique, which is termed the “combined index-abstract” method, has been employed successfully for the handling of a large body of specific items of information in a restricted area of experimental and clinical pharmacology.

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