This report provides a distribution of research and development (R&D) programs by the functions of the federal budget. It includes only federal conduct of R&D programs, with R&D plant and all non-R&D activities excluded. The sections of the report are presented in descending order of R&D budget authority for the various functions in the fiscal year 1985 budget. Each section provides a summary table with text, followed by more detailed tables showing the chief R&D program areas within the function. Headings of these sections are: national defense; health; space research and technology; energy; general science, including National Science Foundation programs and two programs of the Department of Energy; transportation; natural resources and environment; agriculture; international affairs; veterans benefits and services; education (including Department of Education), training, employment, and social services; and all other functions (commerce and housing credit, community and regional development, administration of justice, income security, and general government). Also contained in the report is an agency/function crosswalk which provides an overview of agencies which contribute support to particular functional areas and a series of historical tables in which federal R&D funds by function are presented for the period 1955-85. (JN)