A system is described for the transcription of chemical names into capital letters, a rabie numerals, and four symbols, namely, & -* /. To allow such transcribed names to be accommodated in a fixed punched-card field, regular practices are introduced for the contraction of frequently cited functional groups, prefixes, and suffixes. * Based on a paper presented before the Division of Chemical Literature. 150th
An IBM punched-card system is described for the storage, retrieval, and printout of chemical structural information. A simple numeric structural-atomic code, the BATCH Number, is introduced. The system is employed in the development of a classified structural directory of organic chemicals.
THE BATCH NUMBERCollections of knowledge, for many decades, have been classified according to numerical, nonunique codes. The Dewey classification for library collections represents a
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