During the day (Sunday) a car load of whisky or high wines was broken open by the mob, and they drank very freely of it, and towards night, at the time the Union depot and elevator were burned, most of the active rioters were so drunk as to be unable to continue the work of destruction, if they had been so disposed. Whisky had done good service in this case, if never before. The fatigue consequent upon the labors of Saturday night and Sunday was also producing its effect upon the rioters, and taken in connection with the fact, that most of them must have been filled to satiety with rioting and destruction of property, shows a good cause for the waning of the riot on Sunday afternoon. A few of the rioters, between five and six o'clock, P.M., went to the Duquesne depot, (the property of the Pennsylvania Railroad Company,) at the junction of the Allegheny and Monongahela rivers, with the intention of burning it and the cars in the vicinity. One car was set on fire and an attempt made to set the depot on fire, but some six or eight of the citizens' safety committee arrived there about the time the rioters did, and they interfered at once to put a stop to destruction, and had no difficulty in doing so, as the rioters desisted and left as soon as they saw any authority exerted in opposition to their schemes. The Eighteenth regiment (Colonel Guthrie) had remained at Torrens station, keeping the track clear at that point, and waiting for the expected trains. The crowd at that place numbered about fifteen hundred men, composed of mill men, some railroad men, boys, roughs, and tramps. The passenger trains were allowed to run by the mob, but between Pittsburgh and Torrens they were filled to overflowing by the roughest of the crowd, who traveled backwards and forwards between those places on the trains at their pleasure, and no one dared to interfere with them. They even climbed on the engine and tender, and roofs of the cars, and controlled the movements of the trains whenever they chose so to do between those two points. At Torrens, the crowd would occasionally become demonstrative and defiant, and Colonel Guthrie was obliged to charge bayonets on them several times, and each time had no difficulty in dispersing them. Twice he ordered his men to load in presence of the crowd, and this of itself dispersed them. Colonel Guthrie's troops were not allowed to fraternize with the mob, but were kept entirely aloof from them, and this regiment does not seem to have become demoralized, as the Fourteenth and Nineteenth regiments were. About four o'clock, P.M., Sunday, Colonel Guthrie, hearing that the Fourteenth and Nineteenth regiments had been disbanded, and being unable to ascertain the exact condition of affairs at Pittsburgh, went there and consulted with General Latta, and his regiment was ordered to march to that place, where they arrived about dark, and, of course, too late to be of any service in stopping the destruction of property,