Our cavalry, on receiving the order, did not even give the enemy time to display his front, or to make use of his artillery; but rushed upon him with an impetuous charge, under which he was at once borne down. Of one regiment of those hussars nearly a squadron were taken prisoners. This Russian cavalry, which were in full rout, were pursued as far as the environs of Magnuszewo. The enemy was not permitted to take position, and the pursuit was pressed with such rapidity, that they had not time to destroy the bridge which crosses the river Orsyca, but were followed even to the environs of Rozany, where they reached the position of their main body. General Uminski, in order not to expose his force to the observation of the enemy, halted in an advantageous position in the forests near Rozany, and from this position he continued to hold the enemy in check. In fact, by harassing and wearying the enemy with continual attacks, he at length forced the prince Michael to quit Rozany, taking the direction of Ostrolenka. General Uminski sent in pursuit of the enemy the brigade of cavalry under the command of colonel Dembinski. This brigade, opposite Ostrolenka upon the Narew, had on the 26th of March an advantageous affair with the advanced guard of the enemy, in which forty prisoners were taken. By closely observing the enemy in this manner, it was ascertained that the Russian guard, after destroying the bridge, had completely evacuated Ostrolenka. It was evident that the design of prince Michael, in this sudden evacuation of Ostrolenka, was to join himself to the grand army. General Uminski immediately sent an officer to inform the commander in chief of this movement, continuing in the mean time in the position which he had taken before Ostrolenka. FOOTNOTES: