The immediate cause of the strike at Pittsburgh was not similar to any other that has come to the knowledge of this committee, it being the order to run double-headers. No such cause existed anywhere else, and, therefore, the troubles there could not be considered as a part of any general understanding between trainmen. At Reading, the railroad men were not engaged in any strike, nor did they take any part in the riots there. The troubles there were caused solely by idle men, who had some time previously been discharged from the employ of the Philadelphia and Reading Railroad Company, and for the purpose of venting their spite on the company. At Scranton, although there had been a strike of the railroad men, this had been adjusted, and the men were at work again, when the riots occurred, the riots being engaged in by the idle men and striking miners and mill men. If a riot, growing out of any of these isolated movements, is to be called an insurrection, or if these movements, altogether, are to rise to the dignity of an insurrection, then the word must be given a new definition, for as it now stands, there must have been some pre-concerted arrangement between the men at the different points, to resist the laws of the country, or the move at some point must have been for the purpose of resisting constituted authority, and not the mere purpose of forcing railroad companies, or any other corporations, to come to terms with the strikers, by obstructing the business of the railroad or other corporation. No pre-concerted arrangement of any kind has been proved before your committee, although such persons as might be supposed to know the fact, if it existed at all, were subpoenaed and testified before us, and all of them positively deny that there was any concert of action whatever, among the trainmen, for a strike after the 27th of June, and a local cause for the different strikes in Pennsylvania is given by them all. It has been asserted by many that no rioting or destruction of property would have taken place at Pittsburgh, if the troops had not been called out, and had not fired on the mob. The trifling with the mob, at this place, by the civil authorities, and the sympathy shown by the citizens, with the original strikers, had emboldened and encouraged it to such an extent, that when the Philadelphia troops arrived on the ground, it had, no doubt, got beyond the control of the civil power, as then constituted, and there can be no doubt of the necessity for the presence of those troops. Such mobs as that at the Twenty-eighth street crossing, on Saturday evening, July 21st, at the time the Philadelphia troops were marched out there, would never have dispersed without making serious trouble, troops or no troops.