 Wyclif’s heretical theses concerning the Eucharist are the logical consequence of the application of this philosophical apparatus to the problem of the real presence of the body of Christ in the consecrated host. According to Catholic doctrine, after consecration the body of Christ is really present in the host instead of the substance of the host itself, while the accidents of the host are the same as before. St. Thomas’s explanation of this process, called ‘transubstantiation’, was that the substance of the bread (and wine) was changed into the body (and blood) of Christ, whereas its quantity, through which the substance of the bread received physical extension and the other accidental forms, was now the entity that kept the other accidental forms physically in being. Duns Scotus and Ockham, on the contrary, had claimed that after consecration the substance of the bread (and wine) was annihilated by God, while the accidents of the bread (and wine) remained the same as before because of an intervention of divine omnipotence.