In regard to the robberies, I will state that not a single _regular_ stage, between Big Black and Jackson, has been earnestly interfered with; they were permitted to run, without molestation, while the "robbers" operated against a Massachusetts schoolmaster, some darkies, and the government messengers; not a house was entered in the vicinity of the field of operations, not an inhabitant robbed. All "home institutions" are apparently safe. The inference is natural that these highway men are guerillas in the true sense of the word, and are waging a war against the "invaders." The governor admits, very candidly, that he knows that the people are reluctant to give aid to me by imparting information. Several persons who were halted by the "robbers," but released with the excuse that they were stopped by mistake, refused flatly to give any name, of the party they were stopped by, but declared to know them. You know, captain, that certain parties have importuned the governor, from the beginning, to raise the militia; and, as there was no cause for such a measure before, it probably was thought expedient to get up some cause for the desired purpose. Now we have the "robberies"--they are very one-sided and extraordinary--but they furnished the cause so badly wanted. The governor is confident that a few squads of young men, armed with fowling-pieces and the omnipresent revolvers, can suppress all irregularities, which the utmost vigilance and constant exertion of a large number of United States troops failed to suppress! I must state yet that the parties arrested under suspicion of participating in the described robberies are young men lately connected with the rebel army. There is no doubt on my mind that the young men "who steal the despatches from our messengers" will become good members of the intended militia. With great respect, your obedient servant, P. JOS. OSTERHAUS, _Major General Volunteers_. Captain J. WARREN MILLER, _A.A. General, Department of Mississippi_. Official copy: W.A. GORDON, _A.A. General_. HEADQUARTERS NORTHERN DISTRICT OF MISSISSIPPI, _Jackson, Miss., August_ 21, 1865. Sir: A notice appears in yesterday's paper, over the signature of Lamar Fontaine, calling on the young men of Hinds and Madison counties to meet at Cooper Wells and at Livingstone, respectively, on the 22d and 24th instant, for the purpose of organizing companies and electing officers.