his not having moved upon Mont St Guibert, and manoeuvred by his left. In his despatch, written at two o'clock in the morning, he mentioned to the Emperor his design of marching upon Corbaix or Wavre; a movement of which NAPOLEON, in his reply, expressed his approval; and if he had directed one of his Infantry Corps along the line of Corbaix and La Baraque, and the other by that of Mont St Guibert and Moustier, there can be no doubt that, even late as was the hour at which he started from Gembloux, he would, in a great measure, have fulfilled the expectations of his Imperial Master. In this case, he would naturally have so divided his Cavalry, that one portion would have scoured the country along the Front and Right of the Column marching by Corbaix and La Baraque, and the other portion would have been employed in a similar manner along the Front and Left of the Column moving upon Mont St Guibert and Moustier. Both at this point and at Ottignies, about eight hundred yards lower down the stream, there is a stone bridge across the Dyle. There is a direct road from Moustier to St Lambert, scarcely five miles distant, and another to the Field of Waterloo. The Cavalry in advance of the Left Column could not have failed to discover the Prussian troops in march to join the Left of WELLINGTON; for they were then passing slowly, and with extreme difficulty, through the Defiles of St Lambert and Lasne. This discovery would have led to the Right Column being moved by its left, from La Baraque to Moustier; the Cavalry attached to it masking the movement as long as possible. The Left Column would then, in all probability, have followed its advanced Cavalry to St Lambert; and the Right Corps have either moved upon the same point as a reinforcement, or have diverged upon Lasne as a Support, upon which the former might have fallen back, if compelled to effect its retreat towards Planchenoit. In this manner might GROUCHY have so far realised the anxious expectation of NAPOLEON as to have fallen upon BÜLOW _flagrante delicto_, and have materially procrastinated the co-operation of BLÜCHER with WELLINGTON on the 18th of June; a co-operation which a contrary proceeding, originating in fatal tardiness of movement, and exhibiting useless manoeuvring in a false direction, could not fail to render easy in execution and successful in result. But beyond such procrastination of the meditated junction of BLÜCHER's and WELLINGTON's forces, GROUCHY could have effected nothing. The junction itself could not have been prevented. The tendency of GROUCHY's movements had been too narrowly watched; the country between the Dyle and the Charleroi road to Brussels had been too vigilantly explored; and the movements, in succession, of the different Prussian Corps had been too nicely calculated and determined; to admit of the possibility of a failure, as regarded the arrival of a considerable portion of the Prussian forces on the Left of the Anglo-Allied Army.