The number of scientists and engineers employed at universities and colleges has shown an increase in each of six consecutive surveys conducted between 1965 and 1975. Since 1965 the number of those employed full-time has expanded from 142,700 to 239,000 or 68 percent, while the number of part-time scientists and engineers grew from 36,200 to 58,000, or 60 percent. The rate of growth, however, has slowed considerably in recent years. For example, the number of full-time scientists and engineers rose at an average annual rate of 7.7 percent during the 1965-71 period, fell to 1.5 percent between 1971 and 1974, and increased slightly, by 3 percent from 1974 to 1975. The only significant reduction in a major full-time employment category over the last 10 years occurred in engineering-- down 3 percent from 1973 to 1974, and another 1 percent from 1974 to 1975. Changes were also noted in fields of employment, types of institutions, employment of Ph.D.'s, employment of women, and employment of graduate students. (Author)