_Sandusky_.--This morning, General Stevenson marched out of town to the southward on the Savannah and Sandusky road. It was fully expected that he would have mounted the Sandusky river to support Piffle and engage the enemy's Army of the Centre on the flank; and the present manoeuvre is loudly criticised. Not only is the integrity of the line of the Sandusky ventured, but Stevenson's own force is now engaged in a most awkward country, with a difficult bridge in front. To add, if possible, to our anxiety, it is reported that General Delafield, in yesterday's engagement, lost 3,200 men, killed and wounded. He held his ground, however, and by the last advices had killed 800 and taken 1,400 prisoners, with which he had fallen back again on Yolo itself. This retrogression, it seems, is in accordance with his original orders: he was either to hold Yolo, or if possible advance on Savannah via Brierly. This last he judged unwise, so that he was obliged to cling to Yolo itself. This also is seriously criticised in the best-informed circles. Osbourne himself is reported to be in Savannah. YALLOBALLY RECORD.--"We have never concealed our opinion that Osbourne was a bummer and a scallywag; but the entire collapse of his campaign beats the worst that we imagined possible. We have received, at the same moment, news of Green and Lafayette's column being beaten ignominiously back again across the Sandusky river and out of Grierson, a place on our own side; and next of the appearance of a large body of troops at Yolo, in the very heart of this great land, where they seem to have played the very devil, taking prisoners by the hundred and marching with arrogant footsteps on the sacred soil of the province of Savannah. General Napoleon, the only commander who has not yet disgraced himself, still fights an uphill battle in the centre, inflicting terrific losses and upholding the honour of his country single-handed. The infamous Osbourne is shaking in his spectacles at Savannah. He was roundly taken to task by a public-spirited reporter, and babbled meaningless excuses; he did not know, he said, that the force now falling in on us at Yolo was so large. It was his business to know. What is he paid for? That force has been ten days at least turning the east of the Mar Mountains, a week at least on our own side of the frontier. Where were Osbourne's wits? Will it be believed, the column at Lone Bluff is again short of ammunition? This old man of the sea, whom all the world knows to be an ass and whom we can prove to be a coward, is apparently a peculator also. If we were to die to-morrow, the word Osbourne would be found engraven backside foremost on our hearts."