In 1955, Pope Pius XII made substantial changes to the liturgies for Palm Sunday, the Easter Triduum, and the Vigil of Pentecost. The Palm Sunday blessing of palms was freed from elements such as the recitation of the Sanctus that were relics of an earlier celebration of a separate Mass for the blessing, and the procession was simplified. Among the changes for Holy Thursday were the moving of the Mass from morning to evening, thus making room for a morning Chrism Mass, and the introduction into the evening Mass of the rite of the washing of feet. Changes to the Good Friday liturgy included moving it from morning to afternoon and allowing the congregation to receive Holy Communion, which had been reserved to the priest; an end was also put to the custom whereby, at the communion, the priest drank some unconsecrated wine into which he had placed part of the consecrated host. There were more numerous changes to the Easter Vigil service.