During his visit to the other side of the river Terence had seen, with great satisfaction, that a powerful battery, mounting fifty guns, had been erected on the heights of Villa Nova, and its fire, he thought, should effectually bar any attempt of the French to cross the bridge.  
It would indeed be madness for them to attempt such an operation, as the boats supporting the bridge could be instantly sunk by the concentrated fire of the battery. He said nothing of this on his return to camp, as it might have given rise to fresh agitation among the men, were they to be aware that their presence was not really required for the defence of the bridge. After a short stay in camp he again went down into the town, with the idea that he was more likely to hit upon some plan of action there than he would be in the camp.
 
The two men again went with him. Another prolonged stare at the convent failed to inspire him with any scheme that was in the slightest degree practicable. He fell back upon the conclusion he had mentioned to the two troopers, that the only chance would be to take advantage of the wild confusion that would prevail upon the entry of the French. The difficulty that presented itself to him was, that the nuns would be so appalled by the approach of the French that it would be unlikely that they would think of leaving the protection--such as it was--of the convent, and would shrink from encountering the wild turmoil in the streets. Even if they did so, it would be too late for them to have any chance of getting across the bridge, which would be thronged to a point of suffocation by the mob of fugitives, and might readily be destroyed by one or two of the boats being sunk by the French artillery.
 
The one thing evident was, that he must arrange to get a boat and to station it at the end of some street going down to the river from the neighbourhood of the convent. That part of the city being some distance from the bridge, the streets would soon be deserted, and there would not be a wild rush of fugitives to the boat, which would be the case were it to be lying alongside anywhere near the bridge. Upon the other hand, it would be less likely that the nuns would leave the convent if all was comparatively quiet in that neighbourhood, and did they do so it would be difficult in the extreme to carry off his cousin from their midst, ignorant, too, as he was of her appearance. After looking for some time at the convent, he returned to the more busy part of the town. Presently he heard a great shouting; every window opened, and he saw a crowd coming along the street. By the candles, banners, crucifixes, and canopies it was evident that it was a religious procession. He was about to turn off into a side street when the thought struck him that possibly it was the bishop himself on his way up to the camp; therefore he remained in his place, doffed his hat, and, like all around him, went down on one knee.
 
The procession was a long and stately one, and in the midst, walking beneath a canopy, came the bishop himself. Terence gazed at him fixedly in order to impress on his mind the features of the man whose ambition had cost Portugal so dearly, and at whose instigation so much blood of the most honest and capable men of the province had been shed. The face fully justified the idea that he had formed of the man. The bishop was of commanding presence, and walked with the air of one who was accustomed to see all bow before him; but on the other hand, the face bore traces of his violent character. There was a set smile on his lips, but his brow was heavy and frowning, while his receding chin contradicted the strength of the upper part of his face. There was, too, a look of anxiety and restlessness betrayed by a nervous twitching of the lips.
 
"The scoundrel is a coward," Terence said to himself. "He may profess absolute confidence, but I don't think he feels it, and I will bet odds that he won't be in the front when the time for fighting comes."
 
Terence walked away after the procession had passed.
 
"If one could get hold of the bishop," he said to himself, "one might get an order on the superior of the convent to hand over Mary O'Connor to the bearer, but I don't see how that can possibly be managed. Of course, he is surrounded by priests and officials all day, and his palace will be guarded by any number of soldiers, for he must have many enemies. There must be scores of relatives of men who have been killed by his orders, who would assassinate him, bishop though he is, had they the chance. And even if I got an order--and it seems to me impossible to do so--it would not be made out in the name of Mary O'Connor. I know that they change their names when they go into nunneries, and she may be Sister Angela or Cecilia, or anything else, and I should not know in the slightest degree whether the name he put down was the one that she really goes by. No, that idea is out of the question."
 
Returning to the camp, he held counsel with Herrara. The latter, he knew, had none of the bigotry so general among his countrymen. He had before told him about his cousin being shut up against her will, and of the letter that she had thrown out, but had hitherto said nothing of his intention to bring about her escape if possible.
 
"I had an idea that that was what was in your mind when you went off so early this morning, O'Connor. I have a high respect for the Church, but I have no respect for its abuses. And the shutting up of a young lady, and forcing her to take the veil in order to rob her of her property, is as hateful to me as it can be to you, so that I should have no hesitation in aiding you in your endeavour to bring about her escape. Have you formed any plan?"
 
"No; I have thought it over again and again, but cannot think of any scheme."
 
"If that is the case, O'Connor, I fear that it is useless for me to try to do so; you are so full of ideas always, that if you cannot see your way out of the difficulty, it is hopeless to expect that I could do so. If you can contrive any plan I will promise to aid you in any way you can point out, but as to inventing one, I should never do so if I racked my brain ever so much."
 
"There must be some way," Terence said. "I used to get into all sorts of scrapes when I was a boy, but found there was always some way out of them, if one could but hit upon it. The only thing that I can think of, is to carry her off in the confusion when the French enter the town."
 
"I should say that the nuns would never think of leaving their convent, O'Connor; it is their best hope of safety to remain there."
 
"No doubt it is, but the French don't always respect the convents--very much the contrary, indeed. No, I don't think that they would go out merely to rush into the street; but they might go out if they thought they could get over the bridge before the French arrived."
 
"They might do that, certainly; indeed, it would be the best thing they could do."
 
"Do you think that if one were to dress up as a priest, or as one of the bishop's attendants, and to go as from him with an order to the lady superior to take the nuns at once across the bridge to the convent on the other side, she would obey it?"
 
"Not without some written order," Herrara said. "The bishop would naturally send someone who would be known to her, or if he did send a stranger he would give him a letter or some token she would recognize; otherwise, she could not know that it was his order."
 
"That is what I was afraid of, Herrara, but it is what I shall try, if I can see no other way. Indeed, I see only one chance of getting over the difficulty. The bishop is a tyrant of the worst kind. Now, as far as I can remember, tyrants of his sort--that is to say, tyrants who rule by working on the passions of the mob--are always cowards. I watched the bishop closely when I saw him to-day, and I am convinced he is one also. Even in that kneeling crowd he could not conceal it. There was a nervous twitching about his lips which, to my mind, showed that he was in a state of intense anxiety, and that under all his swagger and show of confidence he was, nevertheless, in a horrible state of alarm. That being so, it seems to me extremely likely that when the fighting begins he will make a bolt of it. He won't wait for the French to enter, for he would know well enough that in their fury at their defeat, the fugitives, if they came upon him, would be likely to tear him limb from limb, just as they have murdered dozens of infinitely better men; so I think that he will make off beforehand. I imagine that he will go secretly, and with only two or three attendants."
 
"But you could never carry him off without an alarm being raised, if that is what you are thinking of, O' Connor."
 
"No, I am not thinking of that; but if I could, say with Bull and Macwitty, suddenly attack him like three robbers, we might carry off something that would serve as a sort of passport to the lady abbess. For instance, he had a tremendously big ring on. I noticed it as he held up his hands, as if on purpose to show it off."
 
"That was his episcopal ring," Herrara laughed. "Yes, if you could get hold of that, it would be a key that would open the door of any convent."
 
"Do you think she would hand my cousin over to me if I showed it to her and gave her a message as from the bishop?"
 
"Yes, if you knew the name. You see, from the day she was made a nun she lost her former name altogether; and certainly the bishop would send for her under her convent name."
 
"That is what I was thinking myself. Then I must get them all out."
 
"You have got to get the ring first," Herrara said with a smile.
 
"Yes, yes, I mean if I get it."
 
"But if the French have entered the town you can never get them across the bridge."
 
"No, I know that. I mean to get a boat and have it lying off the end of some quiet street. I could put a couple of our men into that, for they would only regard it, when I had got her on board, as an effort on my part to save one of the nuns from the French. One thing to do would be to get the robe of a priest, or the dress of one of the bishop's officials."
 
Herrara thought for some time. "I think that I could do that for you, O'Connor. Of course I have a good many acquaintances in Oporto, among them some ladies. I was intending to go across this evening and see some of them, and implore them to leave the town before it is too late. One of these friends of mine might buy some robes for me; a woman can do that sort of thing when a man cannot. She can pretend that she wants to buy the robe as a present for the parish priest, or her father confessor, or something of that sort. At any rate, it is worth trying."
 
"It is, indeed, Herrara, and if you could manage it I should be greatly obliged to you."
 
"I will go across at once. I expect Soult will be close up to-morrow morning, or at any rate the next day. It may be another couple of days before he gets his whole force concentrated, but in four days anyhow his shot will be rattling down into the town. I will go and see what I can do. You had better get one of my troopers to get the boat for you."
 
Herrara did not return until early on the following morning.
 
"I have managed it," he said, as Terence, who was getting very anxious about him, ran forward to meet him.
 
"There is one family in Oporto whose eldest son is a brother officer of mine, and I have visited them here with him, and have met them several times at Lisbon. Indeed, I may tell you frankly that had it not been for the troubles, his sister would, ere this time, have been affianced to me. I had hoped that they had left the town before this, but they told me that any movement of that sort might bring disaster on them. Two of her brothers are in the army, and the bishop could not, therefore, pretend that the father was a traitor to the country; being an elderly man, the latter has in fact held aloof altogether from politics; but he is certainly not of the bishop's party, and the bishop considers that all who are not with him are against him. Had they attempted to leave the town there is no doubt he would have made it a pretext for arresting the father, and would certainly do so on the first opportunity. However, they quite believed that the great force that there is here would be sufficient to defend the fortifications, and were completely taken aback when I told them that I was absolutely convinced that the place would fall at the first attack of the French.
 
"They agreed to make all preparations for leaving at once. Their horses have been seized, nominally that they should be used on the fortifications, but really, I have no doubt, to prevent their leaving. Of course I told them all about what we had been doing, in which they were intensely interested. For aught they know, their house may be watched; so they will come out in some of their servants' clothes. I told them that they must leave on the night before Soult made his attack. Of course he will summon the town, and the bishop will, of course, refuse to surrender, and you may be sure the French will attack on the following day. They left me alone with Lorenza for a time, and I took that opportunity of telling her about your plan, and what you wanted, and she promised to procure you the dress of an ecclesiastic to-morrow. I told her that you were about my size and height.
 
"She knew your cousin personally, and was very fond of her, and therefore entered all the more readily into our plans to get her out. She said that she disappeared suddenly some months ago, and that her mother had given out that she had been suddenly seized with the determination to enter a convent, much against her own wishes. Lorenza felt sure that this was not true, for she knew that your cousin had heard from her father much about the Reformed religion, and was in her heart disposed that way. The mother is engaged to be married to a nobleman who is one of the bishop's warmest supporters, and the general idea was that Mary O'Connor had been forced into a nunnery against her will. I sat talking with them until late last night, and they would not hear of my leaving, especially as they said that the town was full of bands of ruffians, who traversed the streets, attacking and robbing anyone of respectable appearance. As I had rather a fancy to try what a comfortable bed was like again, I did not need much pressing."
 
"Thank you greatly, Herrara, I am indeed obliged to you; things seem to look really hopeful. I have arranged with Bull and Macwitty that on the evening before the attack is likely to take place we will watch all night at this end of the bridge. The bishop won't leave until the last thing, but I would wager any money he will do so that night. He won't go farther than Villa Nova, so as to be ready to cross again at once if the news comes that the French have been beaten off. No doubt he will make the excuse that as an ecclesiastic he could take no active part in the defence, but had been engaged in prayer, which had done more towards gaining the victory than his presence could possibly have done."
 
"I should not be surprised if that should be his course," Herrara said, smiling. "At any rate, for your sake I hope that it will be. Have you seen about a boat?"
 
"Yes, I spoke to Francesco Nortis yesterday evening, and told him that I wanted to hire a boat with two boatmen for the next week. They were to be at his service night and day. He was to tell them that he would not want it for fishing, but that, in case, by any possibility, the French took the town, he should be able to go across and bring some friends over. When I told him that money was no object, he said that there would be no difficulty about it. They will be glad enough to get a good week's pay and next to nothing to do for it."
 
Two days passed quietly. On the first day the news arrived that Silveira had invested Chaves on the day of the battle of Braga, and had forced the garrison, which consisted of but a hundred fighting men, with twelve hundred sick, to capitulate.
 
Day after day news came of the advance of the French. They had moved in three columns. Each had met with a stout resistance, but had carried the passes and bridges after severe loss. One of the columns had been held for some time in check at the Ponte D'Ave, but had carried it at last, whereupon the Portuguese had murdered their general and dispersed.
 
On the 26th, six days after the battle of Braga, Franceschi's cavalry were seen approaching the position in front of Oporto. The alarm bells rung, the troops hurried to t............