other prisoner was confined with Sostre in his small 'segment' of five cells, the entire punitive segregation unit at Green Haven housed on the average about 15 prisoners at any one time.  During the period between June 28, 1967, and September 18, 1968, 179 prisoners were held in segregation for a total of 8,960 days.  From September 19, 1968 to July 3, 1969, when Sostre was there, a total of 79 inmates were segregated at Green Haven.  Of these, about ten percent were held in 'protective' segregation.  This term is used to describe those who are segregated from the general population to protect them from harm rather than as punishment.  These prisoners were incarcerated in cells entirely separated from Sostre's cell in thebe served seconds of the main course upon his demand; but there was no testimony that he would have had that privilege in the general population.  He was denied the dessert that would have been available to the general population; but apart from the dessert his diet still consisted of 2800 to 3300 calories a day.7  Sostre remained in his cell at all times except for a brief period once each week to shave and shower.  An hour of exercise with four or five other prisoners in a small, enclosed yard, open to the sky was a daily routine.  But the record reveals that Sostre refused this privilege because he would not submit to a 'strip search.'  Officials testified that it was necessary