THIS DESCRIPTIVE OVERVIEW OF CHEMICAL INFORMATION TRANSFER ACTIVITIES AND SYSTEMS COVERS THE FULL RANGE OF INFORMATION SERVICES FROM TRADITIONAL PUBLICATION SERVICES THROUGH THE DEVELOPING COMPUTER-BASED SERVICES. THE REPORT IS CONCERNED WITH DOCUMENTATION RATHER THAN ORAL COMMUNICATION AND WITH RECOGNIZED INFORMATION SYSTEMS RATHER THAN INFORMAL SYSTEMS THAT DO NOT HANDLE WIDELY AVAILABLE PERMANENT RECORDS. MANY FACETS OF INFORMATION SERVICES ARE CONSIDERED, BUT THE EMPHASIS IS ON THREE PRINCIPAL AREAS--PRIMARY JOURNALS, SECONDARY INFORMATION SERVICES, AND LIBRARIES. THE REPORT IS CONSTRUCTED IN THREE SECTIONS--(1) A DESCRIPTIVE OVERVIEW OF THE INFORMATION SERVICES WHICH PROVIDE ACCESS TO CHEMICAL INFORMATION, (2) TABULATIONS DESIGNED TO PROFILE THE RANGE AND KINDS OF INFORMATION SERVICES WHICH ROUTINELY PROVIDE PACKAGED CHEMICAL INFORMATION TO THE OVERALL SCIENTIFIC AND TECHNICAL COMMUNITY, AND (3) BRIEF DESCRIPTIONS OF SOME SPECIFIC INFORMATION TOOLS PRODUCED BY PARTICULAR ORGANIZATIONS. A GLOSSARY OF THE TERMINOLOGY AND ACRONYMS USED IN THE REPORT AND A BIBLIOGRAPHY OF 348 ITEMS ARE APPENDED. THIS DOCUMENT IS AVAILABLE AS PB-176-160 FROM THE CLEARINGHOUSE FOR FEDERAL SCIENTIFIC AND TECHNICAL INFORMATION, SPRINGFIELD, VIRGINIA 22151, $3.00 FOR HARD COPY, $0.65 FOR MICROFICHE, 255 PAGES. (AUTHOR/JB)