Ireneo Paz has long lived in the City of Mexico, where he has been a member of Congress, in both houses and a Regidor. He has been, and is, editor of _La Patria_ (The Fatherland). He has been president of the _Prensa Asociada_ (Associated Press) and of the _Liceo Hidalgo_. He was a Commissioner from Mexico to the World’s Columbian Exposition, and as a result of his visit to our country wrote _La Exposicion de Chicago_ (The Chicago Exposition). THE AGREEMENT OF EL ZACATE GRULLO. In an hacienda, situated on the Autlan road, with an obscure name, which, nevertheless became famous in the annals of the period, we, the troops under command of the Generals Anacleto Herrera y Cairo, Antonio Neri and Toro Manuel, including a whole regiment of officers and some few common soldiers, pulled ourselves together, though truly in a pitiable state. The name of this afterward celebrated hacienda deserves special mention--_El Zacate Grullo_. At the hacienda of El Zacate Grullo we planned to impart some organization to those forces, the scanty remnants of what had been the Army of the Centre. It was agreed that, for the time, they should bear the name of the United Brigades. But, promptly, this other question had to rise--who was to command them? The regular leaders at once fixed their eyes upon the valiant and sympathetic General Herrera y Cairo; but the chief obstacle to his taking command was in the great preponderance of irregulars. Would Rojas and his companions submit to the command of a man of fine manners and good education? The next thought was of Rojas or of Julio García; it was certain that two State Governors would not place themselves at the orders of the former, even though he had the greater forces, particularly as he had, among the French, the reputation of a bandit, for which reason they had declared him an outlaw and had proposed pursuing him and treating him as other bandits. Don Julio had the friendship of all and possessed qualities, which connected him with both of these opposite factions. He had been a companion of Rojas, he understood pillage, and he also knew how, at the proper time, to assert his dignity as a public man, rising above his antecedents; but no one gave him credit for military ability. That Don Julio was a sort of bond of union between the two leaders mentioned, served for nought then, in that emergency. But to continue with the facts. The Generals Herrera, García and Rojas, assisted by Aristeo Moreno, who was the secretary of the first and the very intimate friend of the last, passed the whole day in private conference. I supposed, and my supposition was later confirmed, that Rojas had refused to permit my presence in that council. A general order was issued, that after the six o’clock roll-call, all the leaders and officers should present themselves at the lodgings of General Rojas, in order to be informed of what had been decided in the council of generals.