The fortifications of the city were of the most splendid and substantial character known to the age. The ditches, the ravelins, the curtains, the towers were as thoroughly constructed as the defences of any place in Europe. It was therefore necessary that Maurice and his cousin Lewis should employ all their learning, all their skill, and their best artillery to reduce this great capital of the Eastern Netherlands. Again the scientific coil of approaches wound itself around and around the doomed stronghold; again were constructed the galleries, the covered ways, the hidden mines, where soldiers, transformed to gnomes, burrowed and fought within the bowels of the earth; again that fatal letter Y advanced slowly under ground, stretching its deadly prongs nearer and nearer up to the walls; and again the system of defences against a relieving force was so perfectly established that Verdugo or Mansfield, with what troops they could muster, seemed as powerless as the pewter soldiers with which Maurice in his boyhood—not yet so long passed away —was wont to puzzle over the problems which now practically engaged his early manhood. Again, too, strangely enough, it is recorded that Philip Nassau, at almost the same period of the siege as in that of Gertruydenberg, signalized himself by a deed of drunken and superfluous daring. This time the dinner party was at the quarters of Count Solms, in honour of the Prince of Anhalt, where, after potations pottle deep, Count Philip rushed from the dinner-table to the breach, not yet thoroughly practicable, of the north ravelin, and, entirely without armour, mounted pike in hand to the assault, proposing to carry the fort by his own unaided exertions. Another officer, one Captain Vaillant, still more beside himself than was the count, inspired him to these deeds of valour by assuring him that the mine was to be sprung under the ravelin that afternoon, and that it was a plot on the part of the Holland boatmen to prevent the soldiers who had been working so hard and so long in the mines from taking part in the honours of the assault. The count was with difficulty brought off with a whole skin and put to bed. Yet despite these disgraceful pranks there is no doubt that a better and braver officer than he was hardly to be found even among the ten noble Nassaus who at that moment were fighting for the cause of Dutch liberty— fortunately with more sobriety than he at all times displayed. On the following day, Prince Maurice, making a reconnoissance of the works with his usual calmness, yet with the habitual contempt of personal danger which made so singular a contrast with the cautious and painstaking characteristics of his strategy, very narrowly escaped death. A shot from the fort struck so hard upon the buckler under cover of which he was taking his observations as to fell him to the ground. Sir Francis Vere, who was with the prince under the same buckler, likewise measured his length in the trench, but both escaped serious injury.

Pauli, one of the States commissioners present in the camp, wrote to Barneveld that it was to be hoped that the accident might prove a warning to his Excellency. He had repeatedly remonstrated with him, he said, against his reckless exposure of himself to unnecessary danger, but he was so energetic and so full of courage that it was impossible to restrain him from being everywhere every day.

Three days later, the letter Y did its work. At ten o'clock 15 July, of the night of the 15th July, Prince Maurice ordered the mines to be sprung, when the north ravelin was blown into the air, and some forty of the garrison with it. Two of them came flying into the besiegers' camp, and, strange to say, one was alive and sound. The catastrophe finished the sixty-five days' siege, the breach was no longer defensible, the obstinacy of the burghers was exhausted, and capitulation followed. In truth, there had been a subterranean intrigue going on for many weeks, which was almost as effective as the mine. A certain Jan to Boer had been going back and forth between camp and city, under various pretexts and safe-conducts, and it had at last appeared that the Jesuits and the five hundred of Verdugo's veterans were all that prevented Groningen from returning to the Union. There had been severe fighting within the city itself, for the Jesuits had procured the transfer of the veterans from the faubourg to the town itself, and the result of all these operations, political, military, and jesuitical, was that on 22nd July articles of surrender were finally agreed upon between Maurice and a deputation from the magistrates, the guilds, and commander Lanckema.

The city was to take its place thenceforth as a member of the Union. William Lewis, already stadholder of Friesland for the united States, was to be recognised as chief magistrate of the whole province, which was thus to retain all its ancient privileges, laws, and rights of self- government, while it exchanged its dependence on a distant, foreign, and decaying despotism for incorporation with a young and vigorous commonwealth.

It was arranged that no religion but the reformed religion, as then practised in the united republic, should be publicly exercised in the province, but that no man should be questioned as to his faith, or troubled in his conscience: Cloisters and ecclesiastical property were to remain 'in statu quo,' until the States-General should come to a definite conclusion on these subjects.

Universal amnesty was proclaimed for all offences and quarrels. Every citizen or resident foreigner was free to remain in or to retire from the town or province, with full protection to his person and property, and it was expressly provided in the articles granted to Lanckema that his soldiers should depart with arms and baggage, leaving to Prince Maurice their colours only, while the prince furnished sufficient transportation for their women and their wounded. The property of Verdugo, royal stadholder of the province, was to be respected, and to remain in the city, or to be taken thence under safe conduct, as might be preferred.

Ten thousand cannon-shot had been fired against the city. The cost of powder and shot consumed was estimated at a hundred thousand florins. Four hundred of the besiegers had been killed, and a much larger number wounded. The army had been further weakened by sickness and numerous desertions. Of the besieged, three hundred soldiers in all were killed, and a few citizens.

Thirty-six cannon were taken, besides mortars, and it was said that eight hundred tons of powder, and plenty of other ammunition and provisions were found in the place.

On the 23rd July Maurice and William Lewis entered the city. Some of the soldiers were disappointed at the inexorable prohibition of pillage; but it was the purpose of Maurice, as of the States-General, to place the sister province at once in the unsullied possession of the liberty and the order for which the struggle with Spain had, been carried on so long. If the limitation of public religious worship seemed harsh, it should be remembered that Romanism in a city occupied by Spanish troops had come to mean unmitigated hostility to the republic. In the midst of civil war, the hour for that religious liberty which was the necessary issue of the great conflict had not yet struck. It was surely something gained for humanity that no man should be questioned at all as to his creed in countries where it was so recently the time-honoured practice to question him on the rack, and to burn him if the answer was objectionable to the inquirer.

It was something that the holy Inquisition had been for ever suppressed in the land. It must be admitted, likewise, that the terms of surrender and the spectacle of re-established law and order which succeeded the capture of Groningen furnished a wholesome contrast to the scenes of ineffable horror that had been displayed whenever a Dutch town had fallen into the hands of Philip.