Captain Buller, in the Volontaire frigate, was near enough distinctly to hear and see the firing; immediately he sent his launch and barge with some carronades in shore, and anchored the ship with springs in four fathoms water, to support the boats, and act as circumstances might require. These boats acted with great effect upon the right flank of the French; and the frigate bringing its guns to bear upon the enemy’s cavalry, which was forming upon a rising ground, dislodged them; so that they retreated to their position with the loss of about an hundred and fifty men. On the same day Captain Fane, in the Cambrian frigate, and some Spanish boats, performed a like service at Salou, driving from thence, with the loss of some forty men, a detachment of the enemy who had gone thither to plunder the place. ♦MACDONALD RETIRES. AUG. 25.♦ On the fourth day after this affair the French retreated, leaving 700 sick and wounded in the hospital at Reus, and 200 at Valls. Their rearguard was overtaken in the town of Momblanch, and the plunder which they had collected there was recovered: but a Spanish general was put under arrest for not having improved the advantage which he had gained. They suffered also a considerable loss by desertion. Nearly 300 Italians deserted from Reus, and 400 more during the expedition. Suchet with 3000 men had moved down upon Momblanch, to cover a retreat which was not made without danger. This movement left Tortosa for a while free of access, and large supplies were promptly introduced. Macdonald now took a position near Cervera, as a central point, from whence he could cover the besieging army before Tortosa, and threaten the rear of the Spaniards upon the Llobregat, and where he could occupy an extent of country capable of supplying him with provisions. But ♦O’DONNELL SURPRISES THE ENEMY AT LA BISBAL.♦ this afforded opportunity to O’Donell for renewing that system of warfare which he had carried on successfully against Augereau. He embarked a small detachment at Tarragona, provided with artillery, which sailed under convoy of a small Spanish squadron and of the Cambrian frigate. On the 6th of September he put himself at the head of a division at Villafranca, having directed the movements of his troops so as to make the French infer that it was his intention to interpose between them and ♦SEPTEMBER.♦ Barcelona. Leaving Campoverde to throw up works near La Baguda, and secure that pass, he proceeded to Esparraguera: from thence he reconnoitred El Bruch and Casamasanes, and leaving Eroles to guard that position, ordered Brigadier Georget to take post at Mombuy, close by Igualada, and Camp-Marshal Obispo to advance by a forced march from Momblanch, and place himself upon the heights to the right and left of Martorell. This was on the 9th: that same night he ordered Campoverde to march the following morning and join him at S. Culgat del Valles, sending a battalion to reinforce Georget, but letting no one know his destination.