General Chlapowski arrives at Keydany, having ordered general Dembinski to Wilkomierz.--The position of the two forces and their line of operations.--Examination of these arrangements.--Neglect of the important position of Kowno.--General Chlapowski, at Keydany, proposes to form a provisional government, and obtain a levy of troops.--Dispositions of the Lithuanians, as effected by the mismanagement of our leaders.--Advantages offered to the enemy by the delay at Keydany.--Brave defence of Kowno, by the small force left there.--Skirmish at Wilkomierz.--The opportunity of concentrating all the forces at Keydany, and repassing the Niemen, is neglected.--The enemy presses his pursuit.--Battle of Rosseyny.--Attack on Szawla.--Loss of the ammunition and baggage of the corps.--The corps retreats in order to Kurzany, protected by a rear guard of cavalry and light artillery.--At Kurzany the corps is subdivided into three parts.--Destination and strength of each.--Examination of this plan. General Chlapowski, whom we shall hereafter name as having the chief command of the Lithuanian force, arrived on the night of the 22d of June at Keydany, having sent orders to general Dembinski to withdraw with his corps, and to march to Wilkomierz. (10) [_Plan_ XXXIV.] The corps of general Dembinski arrived, on the 21st, at Szerwinty, and on the 22d, at Wilkomierz. On quitting Podbrzeze, general Dembinski left a small detachment in the environs of Myszogola, to act as partizans. The position of our corps was then as follows;--The larger force was at Keydany (2). The corps of Dembinski was at Wilkomierz, and a small corps (_c_) under the command of general Szymanowski was in the environs of Szawla. Our line of operations was on the river Swienta (S) and along the Wiliia (W), for a short distance below the junction of the former river with it. To defend the passage of those rivers against the enemy, the following detachments were designated. Kowno (11) was occupied by two battalions of Lithuanian infantry, recently levied, under the command of colonel Kikiernicki, and a squadron of the 11th regiment of lancers, also Lithuanian, and recently formed. At Janow (12) was a battalion of infantry and a squadron of the 11th lancers, under the command of colonel Piwecki. At Wieprz were three squadrons of the 10th lancers.