The meeting between Zumalacarregui and the prince was respectful, but not warm; the first was unaccustomed to have any feelings, the second was unaccustomed to conceal those he had. The new importation had brought no new ideas, no plans, no accession of science; above all, no money; at least no more than was to be applied to its own wants. Don Carlos was evidently under the constraint that a strong mind imposes on a weak one. He saw that the servant was the master, as much in commanding intellect as in actual power. They were both uncomfortable; Zumalacarregui neither flattered the prince, nor his chances of success; he laid before him his difficulties, almost insuperable in his own opinion—for let it be known as a fact, that he always in his heart despaired of the ultimate upshot of the war. In conversational phrase, he had made himself thoroughly disagreeable; for he had spoken calmly, coldly, truly—and the hopes of an immediate march to Madrid had been rudely shaken. Zumalacarregui left the prince's headquarters with a discouragement and a contempt which he was at no pains to conceal. From that moment he was an object, often of admiration, but never of affection; and it was evident that the effort to esteem him was too painful to ensure a continuance of confidence.

Among those who consider Zumalacarregui solely as the able chief of a devoted army, putting aside all the circumstances of political partisanship, there can be little difference of opinion, if that opinion be fairly formed and honestly given. By those who remark upon the comparatively small number of his troops, and the relatively confined scale of his operations, and who therefore refuse him the name of a great general, it must be remembered, that if this principle of applying reputation be pushed further in its expression—if military praise and appreciation are to be awarded strictly according to the size of the theatre and the magnitude of the numbers, and not according to the spirit which moves over the one, and directs the others—by such geometrical logic, our own great hero would be deemed immeasurably inferior to the French emperor.

Zumalacarregui possessed great courage, but he made no show of it. It would have been more brilliant if he had had more vanity; and the exposure of his person was always subservient to some object of utility. He had a comprehensive view of military movements, but he never forgot the peculiar nature of his warfare; and he never ambitiously allowed himself to be carried away by plans or manœuvres beyond the exigencies of his position. As an administrator in forming reserves, in procuring supplies, in discovering resources, in bringing raw battalions to a state of rough efficiency in the shortest possible time, he was unrivalled; yet his mind was not cramped by detail, and when he descended to minute matters, it was because they were really important. He was severe and inflexible, even taciturn and morose; yet he was extremely loved by his troops. At the time that he was commander-in-chief, commissary-general and treasurer, and that all the sums of money, raised or sent, passed through his hands without a check or a receipt, there never was a breath raised against the purity of his moral character. These certainly are the elements out of which great generals are made; and it is not irrational to think that, under other circumstances, the same man, this Navarrese Guerrillero, far superior as such to the brave but improvident Mina, or the active but dull Jauregui, might have expanded into a European hero, and have left a less perishable name.

When the siege of Bilbao was decided on, Zumalacarregui threw his objections to the winds, and set about it with his constitutional ardour. He arrived before it with fourteen battalions, and a miserable battering-train, composed of two twelve-pounders, one six-pounder, two brass four-pounders, two howitzers and a mortar, and with a great penury of corresponding ammunition. The town was garrisoned by a force of four thousand men, well armed, without counting the national guard, and was protected by forty pieces of artillery, mostly of large calibre, mounted on different forts thrown up in favourable positions. But what was of chief advantage to the besieged, and what almost rendered success hopeless, was the free communication from without kept up by French and English vessels of war stationed in the Nervion, a river that runs alongside the town, and joins the sea at some seven or eight miles' distance.

Zumalacarregui fixed his headquarters at a spot called Puente Nuevo, in a small straggling village, just at this side of the town of Bilbao, and under one of its most fashionable and frequented walks. Eraso had begun the investiture of the place a few days previously, and both these chiefs lodged in a small inn named the Three Sisters. Puente Nuevo was completely commanded by an eminence called the Morro, just outside the gates of Bilbao; but the garrison, either from motives of prudence or others, gave the Carlists no inconvenience from that point.

At a short distance to the right of the Durango road, and on a height immediately over the town of Bilbao, is a church, called Our Lady of Begoña; and not far from it is a house, which, from its comparative size and solidity, and from its commanding view of the country around, goes by the name of the Palace. On the second day of the siege, two serious misfortunes befell the besiegers: eighty of the best muskets they possessed were piled in the portico of the church of Begoña, and were all entirely destroyed by a grenade that took them horizontally, killing the two sentinels that were mounting guard over them. The same evening the two largest of the guns, already half-worn out, burst from continued firing, just as something like an impression appeared on the spot it was proposed to breach.

Don Carlos, during this time, was at Durango, a distance of five or six hours. Zumalacarregui, seeing the hopelessness of the operation, and, above all, the discouragement of the men, sent an express to the prince to say, "that he would be obliged infallibly to raise the siege and retire, unless some means were immediately taken to raise the drooping spirits of his army; that they were without clothes, without food, and almost without ammunition; that it was absolutely necessary that a sum of money should be procured and sent to him, which would enable him to pay the troops a part of what was due to them; and that then, as the means of prolonging a siege was out of the question, he would endeavour to carry out his majesty's wishes, and try to take the place by assault."

Cruz-Mayor, the lead of the Camarilla, loved to humiliate Zumalacarregui, and no answer was returned to this letter; but Zumalacarregui was not idle, nor did he allow inaction to dispirit still more the minds of his men. He even attempted an assault, which failed, with the loss of all those who were ordered on this service. Unfortunately for the attacking column, lots were drawn for the troops that were to compose it; and they fell upon a regiment of Navarrese, entirely ignorant of the localities, who, getting confused in cross-paths and lanes at the foot of the walls, were cut off to a man. It was thought that the result of this attack might have been otherwise had it been undertaken by the Biscayan companies, who knew every inch of the ground. The hour, too, was ill judged, for it was at the beginning of nightfall, when it was just dark enough to embarrass those who were attempting the assault, without being sufficiently so to induce the inhabitants and national guards to retire from the walls.

On the 15th June 1835, Zumalacarregui proceeded to the palace of Begoña, not far from the church of the same name, as the best spot for observing the repairs made, and the additional means of defence raised by the enemy during the night. He passed through the middle room on the first story, and, throwing open the window, went out on the iron balcony overlooking the town. The balls were flying so thick and fast that he desired all those who accompanied him to remain within; but, notwithstanding their supplications, he himself remained leaning on the railing of the balcony, his knees nearly touching the ground. The telescope which he used, showing the marksmen in the enemy's works that he was probably a personage of importance, occasioned a general discharge from the nearest battery. It was now exactly eight o'clock in the morning, and a ball from this discharge struck Zumalacarregui in the upper and anterior part of the right leg, on the inner side, about two inches below the knee. From the position in which he was struck, the ball took a downwards direction, and, as no part of the intricate machinery of the knee was injured, there was every reason to suppose that no serious consequences could ensue.

Either from the extreme pain of the wound, or the shock given to the nervous system, Zumalacarregui fainted. His secretary, Zaratiegui, and the rest of his staff, picked him up in a state of insensibility, and placed him on a chair. The surgeon, Grediaga, a man of considerable acquirements, who was then practising in the sacristy of the church of Begoña, which had been converted into an hospital, was immediately sent for, as well as a young English surgeon of the name of Burgess, belonging to a small body of cavalry called the "Holy Squadron," or the "Squadron of Legitimacy."