Dwarf Elliptical Galaxies 9.
Conclusions Dwarf elliptical galaxies clearly have much to offer for studies of cosmology.
The uniformity of their structure and their ubiquity in the local universe make them promising test particles and distance indicators. Correlations among their structural properties and their stellar populations offer clues to galaxy formation that we have yet to fully understand. For the future, on the observational side we suggest that more detailed quantitative studies of the structure and stellar populations of cluster dE's are vital if we are to provide serious constraints on models for their formation. Samples must be chosen to represent the full range of surface-brightness, morphology, and position in a cluster before we can have a clear idea which parameters are most important. Detailed studies of the stellar populations and luminosity function of the nuclei are also essential if we are to understand how they fit into the process of galaxy formation.