About 1250, the Inquisitor Bernard of Como taught categorically that the phenomena of witchcraft, especially the attendance at the witches' Sabbath, were not fanciful but real: "This is proved," he says, "from the fact that the Popes permitted witches to be burned at the stake; they would not have countenanced this, if these persons were not real heretics, and their crimes only imaginary, for the Church only punishes proved crimes."[1] Witchcraft was, therefore, amenable to the tribunals of the lnquisition.[2]

[1] Lucerna Inquisitorium, Romæ, 1584, p. 144.

[2] In a letter to one of the cardinals of the Holy Office, dated 1643, witchcraft is classed with heresy. Douais, Documents, vol. i, p. ccliv. In practice, the heretical tendency of witchcraft was hard to determine. Each judge, therefore, as a rule, pronounced sentence according to his own judgment.

While the casuists thus increased the number of crimes which the Inquisition could prosecute, on the other hand, they shortened the judicial procedure then in vogue.

Following the Roman law, the Inquisition at first recognized three forms of action in criminal cases—accusatio, denuntiatio, and inquisitio. In the accusatio, the accuser formally inscribed himself as able to prove his accusation; if he failed to do so, he had to undergo the penalty which the prisoner would have incurred (poena talionis).[1] "From the very beginning, he was placed in the same position as the one he accused, even to the extent of sharing his imprisonment."[2] The denuntiatio did not in any way bind the accuser; he merely handed in his testimony, and then ceased prosecuting the case; the judge at once proceeded to take action against the accused. In the inquisitio, there was no one either to accuse or denounce the criminal; the judge cited the suspected criminal before him and proceeded to try him. This was the most common method of procedure; from it the Inquisition received its name.[3]

[1] Tanon, op. cit., p. 260, n. 4.

[2] Tancrède, Ordo judiciorum, lib. ii.

[3] On these three forms of action, cf. Eymeric, Directorium, 3a pars, p. 413 et seq.

The Inquisitorial procedure was therefore inspired by the Roman law. But in practice the accusatio, which gave the prisoner a chance to meet the charges against him, was soon abandoned. In fact the Inquisitors were always most anxious to set it aside. Urban IV enacted a decree, July 28, 1262, whereby they were allowed to proceed simpliciter et de plano, absque advocatorum strepitu et figura.[1] Bernard Gui insisted on this in his Practica.[2] Eymeric advised his associates, when an accuser appeared before them who was perfectly willing to accept the poena talionis in case of failure, to urge the imprudent man to withdraw his demand. For he argued that the accusatio might prove harmful to himself, and besides give too much room for trickery.[3] In other words, the Inquisitors wished to be perfectly untrammeled in their action.

[1] Bull Præ cunctis of July 28, 1262.