As the pope is to bless and distribute the palms, and a solemn procession is to take place, the Cardinals put on their sacred vestments, viz. all of them the amice, the cardinal bishops the surplice and the cope, the priests the chasuble, and the deacons a chasuble shorter in front than that of the priests. The auditors of the Rota, _Cherici di Camera, Votanti_, and _Abbreviatori_ put on a _cotta_ or supplice. The bishops and mitred abbots wear the cope, and the _Penitenzieri_ or confessors of St. Peter's, the chasuble. The copes of the cardinal bishops are ornamented with a _formale_, adorned with three large bosses or projections of pearls arranged in a perpendicular line, while the Pope's are in a triangular order, evidently alluding, to the blessed Trinity. As this is a day of mourning, the sacred vestments are purple. [Sidenote: _ubbidienza._] Thus attired and holding their mitres the Cardinals remain standing while the Pope is vested by the assistant Cardinal-deacons who put on His Holiness the amice, alb, girdle, stole, red cope, _formale_ or clasp, and mitre. All then move in procession towards the high-altar in the order observed in the procession of the palms, as described below:[30] the Pope descends from His _sedia gestatoria_ to adore the Holy Sacrament with the Cardinals etc. The procession then goes to the high-altar; and having prayed for a short time before it, the Pope goes to the throne,[31] and there receives the _ubbidienza_ or homage of all the cardinals present, who in turn kiss His right hand covered with the cope. This ceremony which takes place at all solemn offices, except on good friday, and at masses for the dead, bears some resemblance to the old homage of feudal times[32]. [Sidenote: Blessing of the palms.] Some palms are arranged on the altar. The Pope's chief Sacristan, who is a bishop chosen from the Augustinian order bears one, and kneels on the steps of the throne between the deacon and subdeacon, who bear two larger palms. His Holiness reads the usual prayers over the palms, sprinkles them with holy water, and incenses them three times. [Sidenote: Distribution of the palms.]