Alexandria Daily Gazette, Commercial & Political

New York, March 26.

Latest from Portugal. -- Captain Pigot of the ship Union, arrived here on Saturday from Lisbon, which port he left on the 4th of February, and has furnished the Editors of the Mercantile Advertiser with the following verbal intelligence:

"A few days before captain Pigot sailed two couriers had arrived from Spain, announcing the French having forced the pass of the Sierra-Morena. Two divisions of the French passed with muskets only, but the latter divisions met with obstinate resistance. It was supposed the Spaniards were bribed. Another courier arrived bringing the important news, that the French having advanced as far as Tarragona, were attacked by the Spanish army under the duke de Albuquerque and defeated with the loss of 6000 men, and were obliged to retreat through the pass again. When the courier left Cadiz, Seville, Badajoz, and Cadiz, were illuminated. No particulars of the action had transpired at Lisbon when capt. P. sailed. There was also a report of the revolution in the south of France, headed by Massena and Drouot: that they had sent deputies to lord Collingwood, offering to give up Toulon and Marseilles. The night before capt. P. sailed; a brig of war arrived express from England, but every thing was kept secret. There was a report that she brought a confirmation of the revolution in France, and Bonaparte's proclamation on the subject. Maj. gens. Stuart & Picton had arrived from England, together with the 79th Highland regiment, and the 94th regiment Scotch brigade, same artillery and cavalry and recruits for the regiments in Portugal, composing in all about 25,000 men. It was said lord Wellington was expected at Lisbon to hold a convention. There appeared to be every disposition to defend Portugal. The Portuguese army under marshal Beresford were upwards of 8000 strong, -- the British about 22,000 men."