roughly, then burned, and the "ablution," together with the
ashes, thrown into the sacrarium. If it be discovered that the wine
has been poisoned, the priest should neither receive it nor
administer it to others on any account, lest the life-giving chalice
become one of death, but it ought to be kept in a suitable vessel
with the relics: and in order that the sacrament may not remain
incomplete, he ought to put other wine into the chalice, resume the
mass from the consecration of the blood, and complete the sacrifice.

Reply Obj. 4: If before the consecration of the blood, and after the
consecration of the body the priest detect that either the wine or
the water is absent, then he ought at once to add them and
consecrate. But if after the words of consecration he discover that
the water is absent, he ought notwithstanding to proceed straight on,
because the addition of the water is not necessary for the sacrament,
as stated above (Q. 74, A. 7): nevertheless the person responsible
for the neglect ought to be punished. And on no account should water
be mixed with the consecrated wine, because corruption of the
sacrament would ensue in part, as was said above (Q. 77, A. 8). But
if after the words of consecration the priest perceive that no wine
has been put in the chalice, and if he detect it before receiving the
body, then rejecting the water, he ought to pour in wine with water,
and begin over again the consecrating words of the blood. But if he
notice it after receiving the body, he ought to procure another host
which must be consecrated together with the blood; and I say so for
this reason, because if he were to say only the words of consecration
of the blood, the proper order of consecrating would not be observed;
and, as is laid down by the Council of Toledo, quoted above (ad 1),
sacrifices cannot be perfect, except they be performed in perfect
order. But if he were to begin from the consecration of the blood,
and were to repeat all the words which follow, it would not suffice,
unless there was a consecrated host present, since in those words
there are things to be said and done not only regarding the blood,
but also regarding the body; and at the close he ought once more to
receive the consecrated host and blood, even if he had already taken
the water which was in the chalice, because the precept of the
completing this sacrament is of greater weight than the precept of
receiving the sacrament while fasting, as state