ist's body is in this
sacrament, not according to its proper manner (namely, that the whole
is in the whole, and the individual parts in individual parts), but
after the manner of substance, whose nature is for the whole to be in
the whole, and the whole in every part.

Reply Obj. 2: Two dimensive quantities cannot naturally be in the
same subject at the same time, so that each be there according to the
proper manner of dimensive quantity. But in this sacrament the
dimensive quantity of the bread is there after its proper manner,
that is, according to commensuration: not so the dimensive quantity
of Christ's body, for that is there after the manner of substance, as
stated above (ad 1).

Reply Obj. 3: The dimensive quantity of Christ's body is in this
sacrament not by way of commensuration, which is proper to quantity,
and to which it belongs for the greater to be extended beyond the
lesser; but in the way mentioned above (ad 1, 2).
_______________________

FIFTH ARTICLE [III, Q. 76, Art. 5]

Whether Christ's Body Is in This Sacrament As in a Place?

Objection 1: It seems that Christ's body is in this sacrament as in a
place. Because, to be in a place definitively or circumscriptively
belongs to being in a place. But Christ's body seems to be
definitively in this sacrament, because it is so present where the
species of the bread and wine are, that it is nowhere else upon the
altar: likewise it seems to be there circumscriptively, because it is
so contained under the species of the consecrated host, that it
neither exceeds it nor is exceeded by it. Therefore Christ's body is
in this sacrament as in a place.

Obj. 2: Further, the place of the bread and wine is not empty,
because nature abhors a vacuum; nor is the substance of the bread
there, as stated above (Q. 75, A. 2); but only the body of Christ is
there. Consequently the body of Christ fills that place. But whatever
fills a place is there locally. Therefore the body of Christ is in
this sacrament locally.

Obj. 3: Further, as stated above (A. 4), the body of Christ is in
this sacrament with its dimensive quantity, and with all its
accidents. But to be in a place is an accident of a body; hence
"where" is numbered among the nine kinds of accidents. Therefore
Christ's body is in this sacrament locally.

_On the contrary,_ The place and the object placed must be equal, as
is clear from the Philosopher (Phys. iv). But the place, where this
sacrament is, is mu