Sr. Louis, Juno 15. The following proelarnation has just been issued in in extra Dcmocrot : To the Citizens of Missouri : Prior to the prolaraation issued by Gov. Jackson oi the dato of the 12th of June, it was well known to you that the Governor and legislatura svmpathised in the revolutionary movemenl now in progresa in thU country, and had adoptod overy means in their power to effect a soparation of this Btatc from the guneral government. For this purpose pnrties of avowed seccssionists havo boen organizad into military eompanies throughout the State with the full knowledge and approval of tho Governor. Tho establishment ei the encampments in tho State at an unusual period of the ycar, and anthorizod for an indefinito period, could have had no other object than the concentrating of a largo military force to bo subjocted to tho provisions of a military bilí thon in contemplation and subsequentlv passed. A bilí so offunsive to all peaceful inhabilants, and so palpably unconstitutional that it could bo accepted by those only who were williüg to conform to its extraordmary provisions for the purpose of effecting their cherished object, the disruption of tho Federal government. That bill provides for an obügation to tho State on the part of all persons enrolled under its provisions, irrespoctivo of any obligation to the United States, wben the constitution requires all Stato officors to take of allegiance to thoJnited States. This of itself is a repudiation of all the authority of tho general government, whoso constitution is the suprome law on the part of the Stato government, its officers and such citizens as m'ght choose to adopt the provisions oi tho bill, ind coupled as it was on the part of tho Legislatura and Ihe Govornor with declarations hostile to ts authority and in sympathy with thoso who wero arrayed in a condition of actual hostility against it, could leave no doubt of its object. To narry out the provisions of this oxtraordi nary law the puiblic schools were deprived ol tho funda necessary to tho education of your children. Your nsylums, even , were stripped of their means of support, and an additional and onerous tax was imposed upon you. This bill, regarded, as it has uniforrnly been, by all loyal citizons of the United States, as having in direct viow hostilitiea to the Federal government, was so denounced by Gen. Harney, who oharacterised it &s a secession ordinance in bis proolrimation of the 14th of May last. That proclamation doubtless gave riso to an interview' between General Harney and Gen. Prico that resulted in an agreement which, it was höped, would lead to the restoration cf tranqnillity and good order in your State. That a repudiation of military and all efïorts to organizo the mil i ti a of the State under the provisions was the basis of agrecment, was thown, as well by tho proclamation of Gen. Harney mmediately precoding it, as by the following paper submitted to Gen. Price, oontuining tho proliminary conditions to an interview with hirn. [ Here follows tho paper.] This agreement failed to detfine specifically the terms of the peaco, or how far a suspension]of the provisions of the military bill, should f'orm a pavt of it, though, from an express deolaration by General Harney at the time of the conference, as well as lrorn the foregoing paper, a suspension of any action nndor the bill, until there could be a judicial detonnination of its charactor by sorne competent tribunal, must in good faith be regarded as the fundamental baais of the negotiation. Nevcrthelss, immodiately after this arrangement, and up to the time of Gov. Jackson's proclumation. grievous complaints of attempts to exeoute the provisions of this bill, by which most exasperating hardships havo been imposcd upon poacotul, ïoyal citizetis, coupled with persecution and prosoription of thoso opposed to its provisions, have been mado to me, as eommander of tho United Statos forces here, and have been carried to tho authorities at Washington with nppoals for relief from Union men in all parts of tho State, who have been abused, insultad, and in somo instances, drivcn from their homos. That relief I conceive it to bo tho dut}' of a just government to use overy exertion in its power to givo. Upon this point tho policy of the goverment is setfurth in the following communication from the Department at Wcshtor, ; Apjvt.'.nv Oen-hatr (yrru?. I Wi8HIGH s, Shiy 2'i, 1861. ƒ Brigadier-t ::. Harney, Commanáing Department "f the Wekt, St. Li'uis. Sir - The President observes with concern that notwithstanding the pledge of the Stato authorities to cooperate in preserving tho peaco of Missouri, loyal citizens in groat numbers continue lo bo drivon froin tbeir homes. It is inmaterial whether these outrages continue from inactivity or indisposition on the part of tho State authorities to prevent thorn. It is enough that they continue to devolve on you th duty of putting a stop to them summarily by the iorce under your command, to bc aided by Rucli troops as you may require from Kansas, lovya and Illinois. The professions of loyalty to tho Union by the State nii'.horit Íes are not to be relied upon. They have already faleified tbeir professions too often, and aro to far committed to scecssion to bo admitted to your ooüfidence, and yon can only be suro of their desistiug irora their wicked purposes when it is not in their power to prosecute therr You will, therefore, be unceasingly watchful of their movements, and not permit tho clamors of thoso partisans, and opponents of wise measures already taken, to prevent you from checking everv movement .gainst tho government. Ilovrever disguioed under the pretenso .f o authority, tho authority of the United States is paramount henevor it is apparent that a inovoment, whethor by color of Stuto authority or not, is hostile you will not hogitato to.put it dowu. i) T,. THOMAS, Mjutant General. It is iny design to earry out those ntructioos in 'their letter and ffpirit. Their juslico and propriety wil] bo itppreciated by all thosc who tako an enligbtened viovv oí' the relations of the citizons oí Missouri to the general government, nor can such polioy bo eonstrued as at all disparaging to tho rights or dignity of the State of Missouri, or as infringing in any eenso the individual liberty oí its citizuns. Tho recent proclamation of üov.Jackson, by which ho has set at dofi anco the authority of the United States and urged you to mate war upon thom, isbut aoonsummation oí bis treasonable purposo, long indicated by hia acts and expressed Opinions, and now mado manifest. If in suppressing theso treaeonablo project, and carrying out the policy oí the government, and in maintainiog its dignity as above indicatcd, hostilities ehould unfortunately occur, and unhappy conssquences should follow, I would hope that all aggravation of thoso ovils may bo avoided and that they may bo diverted í'roin the innocent and may fall only upon the heads of thoso by whom they have been provoked. In the discharge of these pluia but onerous duties, I uilall look lor the countcnance and activo co-opcration of all good citi.ens, and I shall expect thern to discountenanco all Ilegal combinations or organiztions, and support and uphold, by cvery lawful means, the Federal overnment, upon tho maintcnance of which dopends their liberties and the perfet enjoyment of all their rights. (Signëd) N. LYON, Brigadier General U. S. Yolttateetfl CumiftEnding. Gen. Lyon Las iseued the following proclamation : Boonville, June 18, 1 801. To the People of MUsouri : Upon lüaving the city of St. Louis, in consequonce oí a declararon of war, made by the. Governor of this State, against tho Government oí the United States, because I would not assume on its behalt to rclinquiéh its d ities and abdícate its riglit of protecting loyal citizens f rom the oppression and cruelly of secessionieta in tiiis State, I published an address to the people, in which I declarad my intention to uso íhe forcé under my command for no other purpose than tho maintenance of tho authority cf the general Government, and protection of the rights and property of all law-abiding ottizens. The State authorities, in violation oí un agreement witli Gen. Harnoy, on tho 21st of May last, had drawn togother and organizod, upon a largo scale, tho means oí w arfare, and having made a dcclaration of war, they abandoned tho Capítol, issued orders for the destruction of the Railroad and telegraph lines, and proceoded to this point to put into execution their hostile purposes towards the general Government. This devolved upon me the neeessity of meeting this issue to tho best of my ability, and accordingly I moved to this point with a portion ot tho iorco under my command, attacked and disporscd the hostile forees, gathered hero by tho Governor, and took possession of tho camp equipagc left, and a considerable number of prisoners, most of ihotn young and oí immature age, who represent that they have been misled by frauds ingeniously devised, and industriously circulated by desinging leaders who seek to devolve upon unretiec.ing and deluded lollowcrs tiie taak of securing the object oí their own false ambition. Out oí compassion for these misguided ypuths, and to correct impressions oréated of unscrupulous calumniators, I liberated thom upon condition, that they will not serve in tho impending liostilities agaiust the United States government. 1 have dono this in spite of the known facts, that tho leaders in the present rebellion having long expenenced tho mildness of the General Government, Btill feel confident, that th iniklnoss cannot bs ovortaxed, even by iactious hostilitiess, having in view its overthrow. Uut lest, as in the ense Í the late Camp Jackson affair, this clemency shall still bo misconstrued, it is proper to give warning, that the government cannot bo always expected to indulge it to the compromiso oí its evident welfare. Having defined that those plotting against the government have falsely representad that tha governmant troops intended a forciblo and violent invasión of Missouri for purposes of military despotisrn and tyranny, I lureby give notiee to tho people of this State, that I shall scrupulously avoid all interferenoo with the business rights and proporty of every doscription, recognized by the laws of this Stato, and belonging to lawabiding citizons, but it is equally my duty to maintain tho paratnount authority of the United States with such foree, as I havo at my command, wiiich will be retained only as long as opposition shall rnako it nccessary, and it is my wish and shall bo my purpose to uevolve my unavoidable rigor arising in this issue, upon thoso who provoKu it. All persons who, under the mi.sapprehension above mentior.ed, have taken up arms, or who are now preparing to do so, are invited to return to their homes and reHnquieb their hostile atti tude to the Federal tíovcrnment, and are assured they may do so without boina molested for past oceurrcr.cos. Brigadier General tJ. S. Volui&eerfl Comniaiuling'