Alexandria Daily Gazette, Commercial & Political

We yesterday received by the Industry, Captain Mellis, a Cadiz Gazette of the 28th June. It does not furnish much news of interest; but contains a long and spirited address of the Junta of Catalonia, dated at Saragossa, the 22d May, calling on the brave Catalans to rise superior to their disasters, and to continue a predatory war on their barbarous invaders. The spirit of the patriots remained animated—skirmishes were continually taking place; and there appeared hopes of yet extricating the peninsula from the French.

We learn verbally from Capt. M. that the important port of Matagorda was entirely destroyed, and that the water flowed over it—that the French still held a position about 300 yards from it—that, on the south side of Cadiz the Spaniards had erected a fort forty-three feet wide, with 38 twenty-four pounders; and to use the words of Capt. M. Cadiz was considered as strong as the rock of Gibraltar; and it was the opinion the French could never obtain it.—Bost. Cent. aug. 22.