"Well, now what do you think of that?" exclaimed Mr. Black. "I just knew I had a reason when I hoisted that flag. It's one Josie always carries in her saddle bags. It makes her feel safer, she says."

"And I hope she is safer," exclaimed Billie, "with it waving over her to-day, than she would be without it."

"At any rate she has more protection than she had a few hours ago," ventured the senora. "I shall never forget how I was protected."

"I'd feel a whole lot better," said Donald, "if I had some other weapon. A Colt does very well in a tight place; but I certainly miss my Marlin."

"We formerly had quite a supply of arms," was the explanation offered by the senora, "but when Gen. Blanco went to join Gen.

Carranza he armed all his men and it took about everything we had. However, there are a few weapons left--unless," she added as an afterthought, "the Huerta soldiers have discovered their hiding place."

She led the way to the cellar and pointed to a spot at one side.

"If you will brush away the dirt that covers the floor about there," she said, "you will find a large slab. This can be raised, and underneath there should still be several good rifles."

Donald and Billie, who had accompanied her, while Adrian remained up stairs with the others, quickly followed her instructions. The edges of the slab were exposed to view and after some effort the opening was revealed. In it were four rifles and an old-fashioned cannon. The rifles were not of the latest make, but two were magazine rifles and were a decided improvement over revolvers in case it came to defending the house.

"I suppose that old cannon might be mounted on the roof somehow and made effective," said Donald after he and Billie had inspected the other arms. Then to the senora: "Is there any ammunition?"

"There was powder in that wine cask," she replied, "but I don't know whether there is any left. The b.a.l.l.s for the cannon are on the roof."

The boys examined the cask and found it contained quite a quant.i.ty of powder. Then they all returned to the library and made their report.

"Not a very heavy armament to withstand a siege, is it?" was Mr.

Black's comment. "Half a dozen rifles with about a hundred cartridges, an old cannon that might explode any minute, and four revolvers. It won't do."

"What else can we do?" asked Billie.

"Why, now that there are four of us, we'll cross the valley to my house. It is just as well located to withstand a siege as this and it is thoroughly armed and provisioned."

"Suppose we have to fight?"

"Then we'll fight."

"But you forget your daughter and the senora and her child."

"I didn't forget Josie," was the reply, "and, wounded as she is, she can take care of herself; but I don't know about the others.

They would be a handicap. Have you anything better to offer?"

Billie scratched his head.

"Not for the moment."

"Well, I have," exclaimed Adrian.

"I thought it was about time Ad woke up," laughed Donald. "Let's have it."

"Captain Lopez told us that there was a large body of Carranza's troops down the railroad a short distance. If he meant by a short distance six or eight miles they can not be more than a couple of miles from where we now are. I feel sure that the skirmish we pa.s.sed through has proved disastrous to the Huerta forces and I am willing to go out and find Captain Lopez and bring relief."

"And I'll go with you," said Billie.

"I can do just as well alone. If I am not captured by the other side I shall make it easily, and," he added, "I am sure I shall not be captured, for I can lick any squad of peons that I'm likely to meet."

"You are a brave boy," said Josie, a bit of praise which brought the color to Adrian's cheeks and was an added incentive for bravery.

"But why shouldn't I go?" insisted Billie.

"You may be needed here. This house is a marked place and if a small band of the Huerta forces has escaped, this will be one of the places where they will rally."

"Your friend is right," agreed Mr. Black. "I admire the pluck of all of you, but his plan is best. The sooner he goes the better and we will make the house as impregnable as we can. Let us hope he is successful."

"You can bet on me," was Adrian's reply as he shouldered his rifle, looked to the fastening of his belt, and descended to the gate, where Mr. Black let him out.

After Adrian had gone the others inspected the house and its approaches for the purpose of determining where they might mount the cannon. They finally decided upon a spot in an angle of the roof, where a chimney offered some protection and from which it commanded the main approach to the house.

"I'm not sure we will be able to get the cannon up there,"

laughed Billie as they pa.s.sed through the library on their way to the cellar, "but we'll do the best we can."

"Don't worry," was Josie's reply. "You don't know how strong Dad is."

The boys thought they could guess, but when they saw Mr. Black pick up the cannon as though it had been a log of cord wood and carry it upstairs they concluded that Josie was right.

"When I was a young man," was Mr. Black's only comment, "I was considered the strongest man in our county. I reckon if it came to a pinch I'd be a pretty hard man to handle even yet."

The boys had no doubt of it.

By the time the cannon was mounted and loaded the sun was nearing the top of the mountains behind them and a few minutes later it sank from sight.

"It won't be long now until we shall have to depend upon our ears instead of our eyes for our protection," said Donald. "Where is the best place to watch?"

"I'll tell you what I think," said Billie. "Let one watch from the roof and the other down by the gate. The one on the roof can hear noises from a distance. The one by the gate can hear any one who may be sneaking around."

"I'll watch on the roof," said the senora. "I know the chirp of every bird that belongs here. I shall know in a minute if anything happens that is unusual."

"And I'll watch by the gate," declared Donald.

"Only till midnight," said Billie, "when I'll relieve you."

"And I'll relieve the senora," said Josie.

"Where do I come in?" queried Mr. Black.

"You are the general, Dad. You can be everywhere."

Sentry duty is always nerve-racking business. If you have ever been obliged to sit alone in the dark and watch with your ears, you will understand this and you will understand how Donald felt sitting alone by the barred gate in the dark, 3,000 miles from home and in the midst of a war-stricken country.

Even the north star looked unfamiliar, so close was it to the northern horizon. Once in a while he fancied he could hear the senora weeping, but for at least three hours this was all he heard.

Then he heard a distinct "S-s-s-s," which was the signal agreed upon between him and the senora if she heard anything unusual.