The inquisitors, always eager to extend their jurisdiction, wished to have the right of undertaking the trials for smuggling saltpetre, sulphur, and gunpowder; this attempt did not succeed, and was, in fact, the cause of their being deprived of the powers bestowed on them by Philip, respecting the introduction of horses into France. _Inquisition of Grenada._ In the yearly _autos-da-fé_ of the Inquisition of Grenada, there generally appeared about twenty condemned persons; for although the Morescoes who denounced themselves were treated with great clemency, yet there were many who refused to accuse themselves, either from the fear which the severity of the Inquisition inspired, or because they were persuaded that those who declared they had been treated with great gentleness, did not dare to assert the contrary; and others, after having emigrated to Africa, had returned to Spain without considering the danger they were in of being arrested by the Inquisition. On the 27th of May, 1593, a grand _auto-da-fé_ took place at Grenada; five individuals were burnt in person, and five in effigy; eighty-seven were condemned to penances. The only considerable person among these, was Donna Inez Alvarez, the wife of Thomas Martinez, alguazil to the royal chancery. She was condemned to be burnt, but making a confession on the scaffold, she was reconciled. The proceedings were the same in the Inquisition of Valencia. The number of Morescoes who relapsed into Mahometanism, and refused to accuse themselves, was so considerable, that many appeared in every _auto-da-fé_, either to be burnt as _impenitent_, or to suffer different penances. _Inquisition of Logroño._ The Inquisition of Logroño was not less active in prosecuting heretics. An _auto-da-fé_ was celebrated every year, composed of about twenty persons condemned for Judaism, and some others for different heresies, particularly Lutheranism; for after the time of Don Carlos de Seso, corregidor of Toro (who was arrested at Logroño, in 1558, and burnt in the following year at Valladolid), there were always some individuals to be found who professed his opinions, and succeeded in obtaining Lutheran books. The council which was informed of this circumstance, wrote to the inquisitors in 1568, enjoining them to redouble their vigilance in preventing the introduction of heretical books, and informed them, that Don Diego de Guzman, ambassador to England, had written that the Protestants of that country boasted that their doctrine was well received in Spain, particularly in Navarre, and that it was even preached there.