Affairs In Missouri

St. Louis, May 21. Major General Price, Commander-inChief of the Missouri inilitia, arrivcd lust night, and this morning had an interview with General llarney, whon a plan was agreed upon for the niaintenanee of poaoe, to audavoid future conflictsbetwoeil Federal and State Goveniments. Thcy mutual ly declare a cominon object of restoiiug peace and good order to tho pcoplo of the State iu subordinaron to the laws of the General and State Governments, and they uiite ia recommending all persons to respect eaeli otlier's rights tliroughout the State, and mako no attempt to cxercise unauihorizod powers, as it is the determination of tho proper authorities to suppress all unhiwful procoed ings which eau only disturb public peaco. Gen. Price plodges tho whole power of the State officeis to maintain order ainoug the people of the State, and Gen. Harney declare?, that this object being assured he can have no occasinn, as he bas no wish, to raake any military movements which inight otherwise créate e.tciteiucnts ar.d joalousics. which he most earnestly desires to avoid. 'J'hcy thereforo enjom tho people to attend to thoir civil business, and express the hope that the unquiet elements which have threatened so seriously to disturb public peace inay soon subside and bo reineuibercd only to be deplored.