The Steamboat Ontario, in going up the lake, encountered a severe gale on Wednesday night and Thursday last: when within three miles of the Niagara river, she was driven back as far as Sodus, but without receiving any damage. A few days previous, a small vessel, which plies as sort of a tender to the Steam-Boat, being heavy laden with iron, &c. was compelled to throw a part of her cargo overboard - a loss of ten hundred dollars, as we are informed.