"Gomez," responded a rider.

The test of this interchange seemed to have been satisfactory for a small, dark man emerged from the shadow of the cottonwood and helped the riders to dismount. One of these later proved to be a woman who was treated with great courtesy by the small man. When the horses were tied the four seated themselves beneath the tree in a spot where the underbrush shut out the world. From the fitful light of an occasional match that served to light the eternal cigarettes of these Mexicans, an observer, if it had been possible for one to have looked on, might have studied four interesting faces.

The bearer of news and evidently the leader of the party was the small, dark man already mentioned. As it afterward developed he was Dr. Rafael Flores of El Paso. Doctor Flores, as the flicker of a match revealed, was a man of some sixty years of age, a thin, wiry individual with refined and almost classic features. He was a practising physician, a citizen of means and repute in the border city. The man who had come with him in the boat was named Comacho. He was short, square built, deeply pock-marked. He was notorious along the border, particularly in Lower California. He was an anarchist and an expert with explosives and was suspected of having been connected with many dire deeds.

The man who came on horseback was huge and heavy and wore always a red flannel shirt. He it was who had led the assault on Juarez when the troops of Francisco Villa had captured that city early in the Madero campaign. He it was who inflicted some of the early atrocities upon prisoners, who plied the torch and who had to be discouraged in his activities by even his bandit associates. "Red Shirt" Pena he had since been called. His specialty was smuggling fire arms over the border. He had sixty loyal followers in the vicinity of El Carmen.

And the woman! Señorita Josefa Calderon was the name by which she was known. She was from the interior, was something of a mystery never entirely understood, but the current belief was that she was a sister of General Orozco. That uncontrolled chief of rebels was even then stationed at Juarez in command of Madero troops and was vacillating between allegiance to the new president and the leading of a revolt against him. Señorita Calderon, veiled, dark-eyed, slim as a cactus, was thought to be his messenger.

"There is news," said Doctor Flores, as soon as the party had settled itself. "General Reyes is in San Antonio. He arrived at New Orleans a week ago, came on to San Antonio where he was given a great demonstration. He has opened revolutionary headquarters there and every mail brings letters and every train brings messengers assuring him of support in overthrowing Madero. He has arranged for money to finance the movement. The friends of Emilio Vasquez Gomez are busily at work along the border. The American financial interests in Mexico are back of us. We are to open headquarters in El Paso and begin the active organization of our forces."

"But the money," said "Red Shirt" Pena. "We can do nothing until we have money with which to buy ammunition."

"The money," assured the doctor, "is to be immediately forthcoming. In that connection I have a mission for the Señorita Calderon. She is to go immediately to San Antonio to report to the chief and to get the money."

"When the money arrives," said Comacho, the anarchist, "all things will be possible. There is dynamite cached at Newman and more at Alamagordo. Ramon Sanchez has other stores of it at Phœnix. We can start action at half a dozen points and wake every dozing peon in Mexico. But provide the money, doctor, and I will guarantee to wake up two nations. There is little question of getting results either through the overthrow of Madero or intervention by the United States."

"Likewise will the arms begin to cross the river as soon as they may be bought," volunteered Pena. "I have many men ready to travel back and forth and each will carry a gun and a box of cartridges each trip."