Searches for primeval galaxies - past, present, and future

Most models of galactic evolution include a high luminosity epoch of bright star formation at a redshift 2 < Z < 100. Past searches have failed to detect galaxies in their 'primeval' state, but recent advances in detector technology will soon enable much improved searches that will very seriously constrain the evolutionary models. Using the CCD detectors on the Space Telescope offers the opportunity for a thousandfold improvement over present search limits. Several models of primeval galaxies are reviewed and their observability in present and future experiments is discussed. (Auth.)