Not long after DOMON's departure, NAPOLEON's impatience to ascertain the precise character of the distant Column was relieved by the arrival of an Officer of _Chasseurs_ with a Prussian Hussar, who had just been taken prisoner; and who was the bearer of a letter, addressed by the Prussian General BÜLOW to the Duke of WELLINGTON, to acquaint the latter with his arrival at St Lambert. The prisoner stated that the Column which was perceptible in the vicinity of this Village, was the Advanced Guard of BÜLOW's Corps, which had not been engaged at Ligny; that he had been in the morning at Wavre; that the three other Prussian Corps were stationed close to that town, and had passed the previous night there, without perceiving any indication of an Enemy in their front; and that a Patrol of his own Regiment had advanced, during the night, as far as two leagues from Wavre without encountering any body of French troops. SOULT who had just at that moment written the following letter to GROUCHY, in reply to his Second Report from Gembloux, immediately added a postscript, referring to the above intelligence, and sent off the despatch, accompanied by the intercepted communication and the Hussar's report. "Du champ de Bataille "On the Field of Battle de Waterloo, le 18, à at Waterloo, the 18th, at une heure après midi. one o'clock in the afternoon. "Monsieur le Maréchal, "Monsieur Marshal, "Vous avez écrit ce matin, à "You wrote at two o'clock this deux heures, à l'Empereur que vous morning to the Emperor that you marcheriez sur Sart à Wallain; would march on Sart à Wallain; donc votre projet était de vous consequently your plan was to porter à Corbaix ou à Wavres: ce proceed to Corbaix or to Wavre. This mouvement est conforme aux movement is in accordance with the dispositions qui vous ont été dispositions which have been communiquées: cependant l'Empereur communicated to you: however the m'ordonne de vous dire que vous Emperor orders me to say to you devez toujours manoeuvrer dans that you ought always to manoeuvre notre direction; c'est à vous à voir in our direction. It is for you to le point où nous sommes pour vous consider our present position in régler en conséquence et pour lier order to guide yourself accordingly, nos communications, ainsi que pour and to knit up our communications être toujours en mesure pour in such a way as to be always tomber sur quelques troupes within limits to fall upon some Ennemies qui chercheraient à inquiéter of the Enemy's troops which would notre Droite, et les écraser. endeavour to annoy our Right, and En ce moment la bataille est engagée to crush them. At this moment sur la ligna de Waterloo. the Battle has commenced on the Le Centre de l'Armée Anglaise est line of Waterloo.