Recently I wrote about a priest pouring wine into a chalice of the Precious Blood and alluded to the fact that he might add enough that the point was reached where the Real Presence ceases.
Following this, Ed Peters wrote:
And Jimmy, what point is that? We’re not talking about adding water, etc., which at some hard-to-identify point would render what is in the cup no longer "Wine" (yes, you know what I mean), since at no point would this not still have the appearance of "Wine". Little help? Great question and a good start toward it. Thx, edp.
Excellent question!
Obviously, we cannot in this case use the test of when the accidents of wine cease to be present since the accidents do not cease to be present.
That fact might lead one to suppose–and I’m not at all saying that Ed supposes this, those someone might–that one could continue to add wine to the Precious Blood without the Real Presence ceasing at all.
This would not be the historic understanding of the Church.
This can be seen from the document De Defectibus in Celebratione Missae Occurentibus ("On Defects Occurring in the Celebration of Mass"), which is a document that deals with liturgical abuses and used to be printed in the front of every Missal before the reform of the liturgy following the Second Vatican Council.
It so happens that I have just translated this document (and will be putting it online soon, after I polish the translation and have it vetted), but since Ed has raised an excellent question, I’ll share one bit of the draft translation here:
If a fly, or a spider, or something else falls into the chalice before the Consecration, he [the priest] pours out the wine in a decent place, and he puts other [wine] in the chalice, mixes in a little water, and offers it, as above, and the Mass proceeds. If after the Consecration a fly or something of this sort has fallen in, he removes it, and washes it with wine. After the Mass is finished he burns it, and the ashes and the liquid of this kind is poured into the sacrarium [De Defectibus X §5].
The document thus expressly directs priests to wash whatever has fallen into the chalice with wine. This would make no sense if the addition of wine did not cause the Real Presence to cease, since the whole point of washing the thing that fell in the chalice is to cause the Real Presence to cease, so that it can be reverently burned.
The Church–in a document that was part of the Roman Missal for 400 years–thus has understood the addition of wine in sufficient quantity to cause the Real Presence of the Precious Blood to cease.
Which gets us back to Ed’s question: At what point does this happen?
My answer would be that this would happen when, in the opinion of reasonable men, so much wine had been added that what is in the chalice would no longer be judged by the senses to be the same wine that was there before. I’m talking, in this case, about the wine that was in the chalice as a whole, not the taste or color or other properties it has.
It’s difficult to verbalize what I mean since "wine" in this context if functioning as a mass noun rather than a count noun, and we don’t have a good word in English for the particular body of wine that is poured into a chalice, but I can offer a couple of examples that should be illuminative:
1) Suppose that a priest had a chalice with the Precious Blood in it and the accidents of wine in this case were of white wine. But then suppose that (God forbid) he started pouring unconsecrated red wine into the chalice. If he poured in only a drop and then mixed it throughly, it seems to me that a reasonable man would say that he had not substantially changed the accidents that were in the chalice–any more than pouring a drop of water in would substantially alter them. The Real Presence would thus remain.
But if he poured in a large amount of red wine then at some point a reasonable man would say, "That’s not the same wine any more" and at that point the accidents masking the Real Presence would have changed so much that the Real Presence would have ceased.
In this case it would be easy(er) to tell because the color would have changed (and the taste as well), but I think the same thing would hold even if the color and taste and smell don’t change. At some point so much wine is added that it no longer appears to be "the same wine" (meaning the same unit of wine) that was in the chalice.
Thus my second illustration . . .
2) Suppose that the priest had a large vat full of white wine and then put some of this in a chalice and consecrated it. He then (God forbid) took the Precious Blood in the chalice and pours it back into the vat and mixes it thoroughly.
It seems to me that a reasonable man would say that the unit of wine that appeared to be in the chalice is no longer present. It has been mixed into the vat of wine and has no independent status any longer. Consequently that unit of wine is no longer present, and neither is the Real Presence.
Now, at what precise point the Real Presence would cease is not something that can be determined, any more than the precise point that so much water is added that it ceases can be determined. We can say, in general terms, that this happens when so much water has been added that it would no longer appears to be wine, but we can’t specify a percentage of change where this happens. It’s a fuzzy boundary, like the boundary between red and orange on a color spectrum.
In the same way we can’t specify precisely when too much wine has been added to the Precious Blood, but in principle it seems to me that it would be the point where the unit of wine that appeared to be in the chalice is so substantially altered that it no longer appears to be the same unit. It has been mixed into another unit of wine and no longer has independent status.
Incidentally, we know by faith that these accidents are divisible in the sense that you can drink part of it and leave enough of the apparent unit of wine in the chalice that the Real Presence stays. The apparent unit of wine can be diminished through drinking without losing the Real Presence as soon as the first sip is taken, and the sip also retains the Real Presence. Though at some point, so much can be removed that the Real Presence does cease–as would happen if there were only an undrinkably thin film of wine molecules (or apparent wine molecules) that refuses to form a drop were left in the chalice.
But it seems to me that the accidents masking the Precious Blood can be altered in two ways that cause the Real Presence to cease: (1) they can alter in quality such that it no longer seems to be wine at all or (2) they can alter in quantity such that they no longer appear to be the same unit of wine that was consecrated.
At least that’s the best I can make out of the Church’s historic understanding that the addition of wine to the Precious Blood can cause the Real Presence to cease.
PRE-PUBLICATION UPDATE: After writing the above, I decided to check the Summa Theologia to see what Aquinas said, and he says the same thing. He even uses some of the same examples, like adding red wine to white, and speaks in terms of the wine having to be not just qualitatively but "numerically" the same wine that was consecrated, which is what I was getting at by talking about it being the same "unit" of wine that was consecrated.