All at once, horrible yells were heard, mingled with the furious galloping of many horses; and then the enemy appeared, leaning over the necks of their steeds, and brandishing their weapons with an air of defiance. When they came within pistol shot, the word to fire was given from the walls, and a general discharge burst forth like a clap of thunder.
The horsemen fell into confusion, and turned back precipitately and in the greatest disorder, followed by the Mexican bullets, which, directed by strong arms and sure eyes, made great ravages in their ranks at every step. Still, they had not fled so fast but that they could be recognised for what they really were—that is, pirates of the prairies. Half naked for the most part, and without saddles, they brandished their rifles and long lances, and excited their horses by terrific yells.
Two or three individuals, probably chiefs, with their heads covered by a species of turban, were noticeable through their ragged uniforms, doubtless torn off murdered soldiers; their repulsive dirt and ferocious appearance inspired the deepest disgust. No doubt was possible: these wretches were certainly whites and half-breeds. What a difference between these sinister bandits and the Apaches, Comanches, and Arapahoes—those magnificent children of nature, so careful in the choice of their weapons—so noble in their demeanour.
After a rather long race, they stopped to hold counsel, out of range of the firearms. They were at this moment joined by a second band, whose leader began speaking and gesticulating with the utmost excitement, pointing to the fort each moment with his rifle. The two bands, united, might possibly amount to one hundred and fifty horsemen.
After a rather long discussion, the pirates started again, and stopped at the very foot of the walls. Captain Niza, wishing to inflict a severe chastisement on them, had given orders not to fire, but to let them do as they pleased. Hidden by the thick cactus hedge, the bandits had suddenly become invisible; but the Mexicans, confiding in the strength of their position and the solidity of the posts and gates, felt no fear.
Reassured by the silence of the garrison, some thirty pirates, among whom were several of their chiefs, escaladed the great gate in turn, and rushed toward the second wall. Unluckily for the success of their plan, the wall was too lofty to be cleared in the same way; hence they scattered. Some sought stones and posts to beat in the second gate; while others tried, though in vain, to open the one they had so easily scaled.
The Mexicans could distinctly hear the pirates in the second enceinte explaining to their comrades the difficulty they experienced in penetrating into the fort, and they must force the gate, in order to allow a passage for those who remained outside. The latter then threw their reatas, which, caught upon the posts, were tightened by the combined efforts of the men and horses, and seemed on the point of pulling the gate off its hinges; but the posts held firmly, and were not even shaken by this supreme effort.
"What are you waiting for, Captain?" Don Ruiz whispered in the Commandant's ear. "Why do you not kill these vermin?"
"There are not enough yet in the trap," he answered, with a cunning look; "let them come."
In fact, as if the bandits had wished to obey the old soldier, some twenty more clambered over the gale, so that there were fifty of the pirates between the cactus and the stone wall. Encouraged by their numbers, which momentarily increased, they made a general assault. But, all at once, every loophole was lit up by a sinister flash, and the bullets began showering uninterruptedly on the wretches, who, through their own position, found it impossible to answer the plunging fire of the Mexicans. Recognising the fault they had committed, and the trap they had so stupidly entered, the pirates became demoralized, fear seized upon them, and they only thought of flight.