With such impatience on the part of the sovereign, it certainly manifested diplomatic abilities of a high character in the Prince, that the treaty negotiated by him amounted to a capitulation by France. He was one of the hostages selected by Henry for the due execution of the treaty, and while in France made that remarkable discovery which was to color his life. While hunting with the King in the forest of Vincennes, the Prince and Henry found themselves alone together, and separated from the rest of the company. The French monarch’s mind was full of the great scheme which had just secretly been formed by Philip and himself, to extirpate Protestantism by a general extirpation of Protestants. Philip had been most anxious to conclude the public treaty with France, that he might be the sooner able to negotiate that secret convention by which he and his Most Christian Majesty were solemnly to bind themselves to massacre all the converts to the new religion in France and the Netherlands. This conspiracy of the two Kings against their subjects was the matter nearest the hearts of both. The Duke of Alva, a fellow hostage with William of Orange, was the plenipotentiary to conduct this more important arrangement. The French monarch, somewhat imprudently imagining that the Prince was also a party to the plot, opened the whole subject to him without reserve. He complained of the constantly increasing numbers of sectaries in his kingdom, and protested that his conscience would never be easy, nor his state secure until his realm should be delivered of “that accursed vermin.” A civil revolution, under pretext of a religious reformation, was his constant apprehension, particularly since so many notable personages in the realm, and even princes of the blood, were already tainted with heresy. Nevertheless, with the favor of heaven, and the assistance of his son and brother Philip, he hoped soon to be master of the rebels. The King then proceeded, with cynical minuteness, to lay before his discreet companion the particulars of the royal plot, and the manner in which all heretics, whether high or humble, were to be discovered and massacred at the most convenient season. For the furtherance of the scheme in the Netherlands, it was understood that the Spanish regiments would be exceedingly efficient. The