Being a man of uncertain will-power he hesitated a long time. He tried kindness and sternness and promises and threats. The Hollanders remained obstinate, and continued to sing psalms and listen to the sermons of their Lutheran and Calvinist preachers. Philip in his despair sent his “man of iron,” the Duke of Alba, to bring these hardened sinners to terms. Alba began by decapitating those leaders who had not wisely left the country before his arrival. In the year 1572 (the same year that the French Protestant leaders were all killed during the terrible night of Saint Bartholomew), he attacked a number of Dutch cities and massacred the inhabitants as an example for the others. The next year he laid siege to the town of Leyden, the manufacturing center of Holland. [Illustration: LEYDEN DELIVERED BY THE CUTTING OF THE DYKES] Meanwhile, the seven small provinces of the northern Netherlands had formed a defensive union, the so-called union of Utrecht, and had recognised William of Orange, a German prince who had been the private secretary of the Emperor Charles V, as the leader of their army and as commander of their freebooting sailors, who were known as the Beggars of the Sea. William, to save Leyden, cut the dykes, created a shallow inland sea, and delivered the town with the help of a strangely equipped navy consisting of scows and flat-bottomed barges which were rowed and pushed and pulled through the mud until they reached the city walls. [Illustration: THE MURDER OF WILLIAM THE SILENT] It was the first time that an army of the invincible Spanish king had suffered such a humiliating defeat. It surprised the world just as the Japanese victory of Mukden, in the Russian-Japanese war, surprised our own generation. The Protestant powers took fresh courage and Philip devised new means for the purpose of conquering his rebellious subjects. He hired a poor half-witted fanatic to go and murder William of Orange. But the sight of their dead leader did not bring the Seven Provinces to their knees. On the contrary it made them furiously angry. In the year 1581, the Estates General (the meeting of the representatives of the Seven Provinces) came together at the Hague and most solemnly abjured their “wicked king Philip” and themselves assumed the burden of sovereignty which thus far had been invested in their “King by the Grace of God.”