For this chapter, hospitals shall be considered as parts of a system and, for purposes of perspective, something of the history of the development of these facilities will be considered. Then the effects of advances in treatment techniques, the administrative responses to new problems and conditions, and the impact of newer fiscal and legal developments and the effect that they have had on the structure and function of the psychiatric hospitals generally will be considered. Finally, the situation with respect to several types of psychiatric hospitals will be reviewed. (46 pp.)