scientific establishments. Presidency He returned to Mexico in September 1858, after the War of Reform had already begun, and offered his services to General Echeagaray, advising him to dig a trench around the liberal held Fortress of Perote in order to cut off its communications. He traveled to the capital and joined the 'fusionist' wing of the Conservative Party which advocated compromise with the liberals. Dissatisfaction with Conservative president Zuolaga's handling of the war, and his inability to pass a new constitution caused Echeagaray to revolt against him through the Plan of Ayotla in December, 1858. The revolt was suppressed only for a modified form of the Ayotla Plan to be proclaimed by Robles Pezuela. The plan aimed to form together with the chief civil authority of each department, a Junta of Notables, that would then choose three representatives from each departments to form a constituent congress for the purpose of writing a new constitution which would then be subjected to a national referendum. Robles Pezuela also wished to compromise with the liberals, and hoped that removing Zuolaga would aid in the matter. Zuolaga was successfully removed from the presidency, and upon ascending to power Robles passed several war measures, and negotiated with the clergy for means to support the war effort. He sent commissioners to the Governor Gutierrez Zamora of the strategic state of Vera Cruz, and to the rest of the Constitutional Governors, inviting them to join the plan. The invitations were largely ignored except in departments of Mexico and Guanajuato did accept the plan. The plans for a Junta did not include a commissioner to represent the conservative armies of the north, in a seeming effort to ignore conservative hardliner, General Miguel Miramon, a move that proved to be unpopular among the conservatives. Robles conceded and added a representative for Miramon in the Junta. A Junta of Notables in accordance with the plan Ayutla Plan did finally meet on December 30 presided over by Mariano Riva Palacio. It passed rules for the executive, and made plans for calling a constituent congress. When it came time for the Junta to elect a president of the Republic, Robles Pezuela lost to General Miguel Miramon by four votes. The presidency passed over to Miramon on January 31, 1859. Post presidency and execution President Miramon made Robles governor and commander-general of Veracruz, and he went on to lead the Division of