This report, the 24th in an annual series on research expenditures of Texas public institutions of higher education, is based on data provided by each institution for fiscal year 1990. Institutions were asked to ensure that the data reported were consistent with their annual financial reports, and that they used a set of established definitions and data elements consistent with similar data collection efforts of the National Science Foundation. Some of the conclusions of the report include the following: total research expenditures increased 8.1 percent over fiscal year 1989; among public academic institutions, Texas A&M University (including Texas A&M Services) reported the highest research expenditures; the federal government provided 50.1 percent of research expenditures and continues to be the largest source of research funds; and institutions of higher education reported that 75.5 percent of their research is basic (as opposed to applied) research. Research expenditures in some areas of special interest included the following: cancer, $113,970,604; energy, $62,063,064; biotechnology, $58,840,009; food, fiber, agricultural products, $38,703,175; environmental science and engineering, $31,761,086. Finally, the top 10 research institutions together accounted for more that 90.7 percent of all research expenditures in the state. Many tables and figures illustrate the data. Appendix A is a copy of the survey form. Appendix B lists the institutional contact persons who submitted the data for the report. (JB)