During the procession the crucifix on the altar of the Sixtine chapel
is removed, and a larger cross containing a considerable relic of the
true cross is substituted for it. This relic was sent to Pope Leo the
Great in the 5th century by Juvenal Bishop of Jerusalem. It was lost,
but found again by Pope Sergius I in 687: it was stolen at the sack
of Rome in 1527, and removed from its case of silver: however it was
recovered by Clement VII, who ordered the rich cross, in which it
is at present preserved, to be made: in 1730 it was again stolen but
recovered once more by Clement XII. At the close of the last century,
though the candlesticks, and the statues of the Apostles belonging
to the papal chapel were lost, this cross was preserved. In 1840 His
present Holiness Gregory XVI ordered it to be again exposed to the
public veneration in the Sixtine chapel: He gave it to the charge
of the chapter of S. Peter's, who deliver it to _M. Sagrista_ on
Good-friday morning: and it remains in the Sixtine chapel till the
end of Tenebrae on that day. Moroni _Cappelle Pontificie etc._

The _Mass_ of the _Presanctified_, as it is called, is next
celebrated; Card. Tommasi, following S. Cesarius of Arles, calls
it the office, and not the mass of good-Friday; for mass, strictly
speaking, is not offered up on this day, since no consecration takes
place, and the B. Sacrament is received by the celebrant under the
form of bread alone, as it could not be preserved with safety under
the form of wine[99].

[Sidenote: Mass of the Pre-Sanctified.]

The Card. Celebrant places the B. Sacrament on the paten[100] and
thence on the corporal. In the meantime the deacon puts wine into the
chalice, and the subdeacon water, which however are neither blessed or