Whether wheaten bread is required for the matter of this sacrament?

❌ Objection 1 : It seems that wheaten bread is not requisite for the matter of this sacrament, because this sacrament is a reminder of our Lord's Passion. But barley bread seems to be more in keeping with the Passion than wheaten bread, as being more bitter, and because Christ used it to feed the multitudes upon the mountain, as narrated in Jn. 6. Therefore wheaten bread is not the proper matter of this sacrament.

❌ Objection 2 : Further, in natural things the shape is a sign of species. But some cereals resemble wheat, such as spelt and maize, from which in some localities bread is made for the use of this sacrament. Therefore wheaten bread is not the proper matter of this sacrament.

❌ Objection 3 : Further, mixing dissolves species. But wheaten flour is hardly to be found unmixed with some other species of grain, except in the instance of specially selected grain. Therefore it does not seem that wheaten bread is the proper matter for this sacrament.

❌ Objection 4 : Further, what is corrupted appears to be of another species. But some make the sacrament from bread which is corrupted, and which no longer seems to be wheaten bread. Therefore, it seems that such bread is not the proper matter of this sacrament.