The three months of Pombal's apparent inaction had been incessantly employed in researches into the plot. Extreme caution was evidently necessary, where the criminals were among the highest officials and nobles, seconded by the restless and formidable machinations of the Jesuits. When his proofs were complete, he crushed the conspirators at a single grasp. His singular inactivity had disarmed them; and nothing but the most consummate composure could have prevented their flying from justice. On the 12th of January 1759, they were found guilty; and on the 13th they were put to death, to the number of nine, with the Marchioness of Tavora, in the square of Belem. The scaffold and the bodies were burned, and the ashes thrown into the sea. Those were melancholy acts; the works of melancholy times. But as no human crime can be so fatal to the security of a state as regicide, no imputation can fall on the memory of a great minister, compelled to exercise justice in its severity, for the protection of all orders of the kingdom. In our more enlightened period, we must rejoice that those dreadful displays of judicial power have passed away; and that laws are capable of being administered without the tortures, or the waste of life, which agonize the feelings of society. Yet, while blood for blood continued to be the code; while the sole prevention of crime was sought for in the security of judgment; and while even the zeal of justice against guilt was measured by the terrible intensity of the punishment--we must charge the horror of such sweeping executions to the ignorance of the age, much more than to the vengeance of power. This tragedy was long the subject of European memory; and all the extravagance of popular credulity was let loose ill discovering the causes of the conspiracy. It was said, in the despatches of the English minister, that the Marquis of Tavora, who had been Portuguese minister in the East, was irritated by the royal attentions to his son's wife. Ambition was the supposed ground of the Duke of Aveira's perfidy. The old Marchioness of Tavora, who had been once the handsomest woman at court, and was singularly vein and haughty, was presumed to have received some personal offence, by the rejection of the family claim to a dukedom. All is wrapped in the obscurity natural to transactions in which individuals of rank are involved in the highest order of crime. It was the natural policy of the minister to avoid extending the charges by explaining the origin of the crime. The connexions of the traitors were still many and powerful; and further disclosures might have produced only further attempts at the assassination of the minister or the king.