The Prince spoke with Beauregard, and the Prince's and his companions' opinion is, that McDowell planned well his attack, but failed in the execution; and Beauregard thought the same. The Prince saw McClellan, and does not prize him so high as we do. These foreign officers say that most probably, on both sides, the officers will make most correct plans, as do pupils in military schools, but the execution will depend upon accident.

Mr. Seward shows every day more and more capacity in dispatching the regular, current, diplomatical business affairs. In all such matters he is now at home, as if he had done it for years and years. He is no more spread-eagle in his diplomatic relations; is easy and prompt in all secondary questions relating to secondary interests, and daily emerging from international complications.

Hitherto the war policy of the administration, as inspired and directed by Scott, was rather to receive blows, and then to try to ward them off. I expect young McClellan to deal blows, and thus to upturn the Micawber policy. Perhaps Gen. Scott believed that his name and example would awe the rebels, and that they would come back after having made a little fuss and done some little mischief. But Scott's greatness was principally built up by the Whigs, and his hold on Democrats was not very great. Witness the events of Polk's and Pierce's administrations. His Mississippi-Atlantic strategy is a delirium of a softening brain. Seward's enemies say that he puts up and sustains Scott, because in the case of success Scott will not be in Seward's way for the future Presidency. Mr. Lincoln, an old Whig, has the Whig-worship for Scott; and as Mr. Lincoln, in 1851, stumped for Scott, the candidate for the Presidency, the many eulogies showered by Lincoln upon Scott still more strengthened the worship which, of course, Seward lively entertains in Lincoln's bosom. Thus the relics of Whigism direct now the destinies of the North. Mr. Lincoln, Gen. Scott, Mr. Seward, form a triad, with satellites like Bates and Smith in the Cabinet. But the Whigs have not the reputation of governmental vigor, decision, and promptitude.

The vitiated impulse and direction given by Gen. Scott at the start, still prevails, and it will be very difficult to bring it on the right track—to change the general as well as the war policy from the defensive, as it is now, to the offensive, as it ought to have been from the beginning. The North is five to one in men, and one hundred to one in material resources. Any one with brains and energy could suppress the rebellion in eight weeks from to-day.

Mr. Lincoln in some way has a slender historical resemblance to Louis XVI.—similar goodness, honesty, good intentions; but the size of events seems to be too much for him.

And so now Mr. Lincoln is wholly overshadowed by Seward. If by miracle the revolt may end in a short time, Mr. Seward will have most of the credit for it. In the long run the blame for eventual disasters will be put at Mr. Lincoln's door.

Thank heaven! the area for action and the powers of McClellan are extended and increased. The administration seems to understand the exigencies of the day.

I am told that the patriotic and brave Senator Wade, disgusted with the slowness and inanity of the administration, exclaimed, "I do not wonder that people desert to Jeff. Davis, as he shows brains; I may desert myself." And truly, Jeff. Davis and his gang make history.

Young McClellan seems to falter before the Medusa-ruin Scott, who is again at his tricks, and refuses officers to volunteers. To carry through in Washington any sensible scheme, more boldness is needed than on the bloodiest battle-field.

If Gen. Scott could have disappeared from the stage of events on the sixth of March, his name would have remained surrounded with that halo to which the people was accustomed; but now, when the smoke will blow over, it may turn differently. I am afraid that at some future time will be applied to Scott * * * quia turpe ducunt parere minoribus, et quæ imberbi didicere, senes perdenda fateri.