In the confusion of so great a movement, a division designed by Bennigsen to occupy the town itself, misunderstood the order, and evacuated it at the approach of the enemy's van. The French took possession of the place accordingly, and--General Bennigsen commanding it to be regained, as soon as he learned the mistake that had occurred--the whole day was spent in severe fighting within the town, which was taken and retaken several times, and at the fall of night remained in the hands of the French. On either side the loss had been very great, and Napoleon coming up in person, perceived that the contest must needs be renewed at daybreak. The night was clear, and he could trace the enemy's line darkening the whole of an admirably selected position, between which and the dearly contested town, a level space covered with snow, and two or three small frozen lakes, glittered in the mingled light of an unclouded moon and innumerable watch-fires. The great battle of PREUSS-EYLAU was fought on the 8th of February. At dawn of day the French charged at two different points in strong columns, and were unable to shake the iron steadiness of the infantry, while the Russian horse, and especially the Cossacks under their gallant Hetman Platoff, made fearful execution on each division, as successively they drew back from their vain attempt. A fierce storm arose at mid-day: the snow drifted right in the eyes of the Russians; the village of Serpallen, on their left, caught fire, and the smoke also rolled dense upon them. Davoust skilfully availed himself of the opportunity, and turned their flank so rapidly, that Serpallen was lost, and the left wing compelled to wheel backwards so as to form almost at right angles with the rest of the line. The Prussian corps of L'Estocq, a small but determined fragment of the campaign of Jena, appeared at this critical moment in the rear of the Russian left; and, charging with such gallantry as had in former times been expected from the soldiery of the Great Frederick, drove back Davoust and restored the Russian line. The action continued for many hours along the whole line--the French attacked boldly, the Russians driving them back with unfailing resolution. Ney, and a fresh division, at length came up, and succeeded in occupying the village of Schloditten, on the road to Konigsberg. To regain this, and thereby recover the means of communicating with the King of Prussia, was deemed necessary; and it was carried accordingly at the point of the bayonet. This was at ten o'clock at night. So ended the longest and by far the severest battle in which Buonaparte had as yet been engaged. The French are supposed to have had 90,000 men under arms at its commencement; the Russians not more than 60,000. After fourteen hours of fighting, either army occupied the same position as in the morning. Twelve of Napoleon's eagles were in the hands of Bennigsen, and the field between was covered with 50,000 corpses, of whom at least half