right|thumb|A Catholic priest celebrating Tridentine Mass, the form of the Mass prevalent until after the council, showing the chalice after the consecration.
rIGhT|tHuMb|a catholIc prIest Celebrating TRidentine mass, thE fOrm oF The MASS PreValEnT uNtil aFTeR ThE counciL, sHowinG the chaLICe afteR thE cOnSeCraTIon.