NIAGARA FORT.--_Upper Canada._--“The Fort of Niagara was a place of great importance, and served to command all the communication between the northern and western French settlements. The siege was begun with vigour, and promised an easy conquest; but General Prideaux was killed in the trenches by the bursting of a mortar, so that the whole command of the expedition devolved upon General Johnson, who omitted nothing to push forward the vigorous operations of his predecessor, to which also he added his own popularity with the soldiers under him. A body of French troops, who were sensible of the importance of this fort, attempted to relieve it; but Johnson attacked them with intrepidity and success; for in less than an hour their whole army was put to the rout. The garrison soon after perceiving the fate of their countrymen, surrendered prisoners of war.” NICOPOLIS, BATTLE OF.--Between the Christian powers, under Sigismund, King of Hungary, and the Turks. This battle, fought A.D. 1396, is celebrated as the first fought between the Cross and Crescent. The Christians triumphed; the Turks lost 20,000 in slain, and 20,000 in wounded and prisoners. NILE, BATTLE OF THE.--Fought, August 1st, 1798, between the fleets of England and France. The French fleet arrived at Alexandria August 1st, 1798, and Admiral Brueys, not being able to enter port, which time and neglect had ruined, moored the ships in Aboukir Bay, in a strong and compact line of battle; the headmost vessel, according to his own account, being as close as possible to a shoal on the north-west, and the rest of the fleet forming a kind of curve along the line of deep water, so as not to be turned by any means in the south-west. The advantage of numbers, both in ships, guns, and men, was in favour of the French. They had 13 ships of the line and 4 frigates, carrying 1196 guns, and 11,230 men. The English had the same number of ships of the line, and one 50 gun ship, carrying 1012 guns, and 8068 men. The English ships were all seventy-fours; the French had three 80 gun ships, and one three-decker of 120.