General Latta, after directing General Pearson, at Pittsburgh, to order out one regiment, and to take command of the military situation, reported what had occurred, and his order to General Pearson, to the Governor, which dispatch reached the latter at Antelope, on the Union Pacific railroad, July 20, before noon, which was answered by the Governor from Cheyenne, at half past one, P.M., the same day, directing General Latta to "order promptly all troops necessary to support the sheriff in protecting moving trains on the Baltimore and Ohio railroad, and go to Pittsburgh and keep supervision of all troops ordered out." From this time communication by telegraph was kept up by the Governor until his return, and all troops were ordered out in pursuance to general orders given by him. The Governor received a telegram from C. N. Farr, his private secretary, and General Latta, at 2.20, P.M., the 20th instant, that everything was going on well, and the riot would be suppressed, and for him to go on. He accordingly pursued his journey to Salt Lake City, where he received a telegram Saturday evening, the 21st, at nine o'clock, giving an account of the collision between the troops and the mob at Pittsburgh, when he immediately procured a special train, and started on his return. These facts show that the troops were called out by the proper authority of the State, on a requisition of the civil authorities of the locality where the troops were to be sent. We believe that neither the mayor of Pittsburgh, nor the sheriff of Allegheny county, had exhausted their powers under the law to disperse the mob before calling for troops, and that under the rules adopted by the commander-in-chief the steps prerequisite to ordering out the troops had not been properly taken by the civil authorities. The purpose for which the troops were called out was to assist the civil authorities in enforcing the law, and preserving the public peace, and it was at no time supposed by any one of the military officers that they superseded the civil power, although at some places they were obliged to act in the absence of the civil officers, the latter having run away, or refused to do anything to suppress the riotous disturbances.