"That the undersigned, in his capacity as constitutional governor of the state of Coahuila, had solemnly taken the oath to observe and cause the general constitution to be observed, and that complying with this duty and of the above oath, he was inevitably obliged to arise in arms to oppose the usurpation of Huerta and to restore constitutional order in the Republic of Mexico.
***
"That, it being imperative, therefore, that the interruption of constitutional order should subsist during this new period of struggle, the Plan of Guadalupe should, therefore, continue to be in force, as it has been the guidance and banner of it, until the enemy may have been overpowered completely in order that the constitution may be restored.
***
"Article 4. Upon the success of the revolution when the supreme chieftainship may be established in the City of Mexico and after the elections for municipal councils in the majority of the states in the republic, the first chief of the revolution, as depository of the executive power, shall issue the call for election of congressmen, fixing in the call the date and terms in which the election shall be held."
Mr. Arredondo also transmitted with his letter an "annex" entitled "Declaration to the Nation", signed by V. Carranza, dated June n, 1915, in which the following occurs:
"Treason was carried into effect by General Huerta under the pretext of saving the City of Mexico from the horrors of war.
***
The