NEY, having quitted Charleroi at a very early hour in the morning, returned to Gosselies, where he communicated with REILLE, whom he ordered to assemble the force then with him, consisting of two Infantry Divisions and their Artillery, and to advance upon Frasne: to which point the Marshal repaired in person. Here he collected all the information which the Generals and other Officers had been able to obtain respecting the Enemy; and being naturally anxious to make himself acquainted with the details of the force placed so suddenly under his orders, he desired Colonel HEYMÈS, his first Aide de Camp, to repair to every Regiment, and note down their strength and the names of the Commanding Officers; after the performance of which duty, Colonel HEYMÈS laid before the Marshal a return of the troops in the Field. The uncertainty in which NEY was placed as to the amount of force concentrated by the Allies during the night in rear of Quatre Bras, and the conviction which he had reason to entertain that the Prussians were in strong force at no very great distance on his right, and that therefore any check experienced by the Main Column under NAPOLEON, would endanger his Right Flank and even his line of communication, rendered him cautious in attacking a point so considerably in advance of the Emperor's Left, without ample means at hand to enable him, in case of disaster, to maintain that line, or, in the event of success, to effectually establish himself at Quatre Bras, and derive every possible advantage from its possession, by checking, if not defeating in detail, any body of troops that might be approaching it as a point of concentration from either Nivelles or Brussels. Hence he became extremely anxious for the arrival of D'ERLON's Corps and the promised Third Corps of Heavy Cavalry under KELLERMANN; the more so, as although LEFÈBVRE-DESNOUETTE's Light Cavalry of the Guard was nearer at hand, he had been desired by NAPOLEON not to make use of it. Officers of the _Chasseurs_ and Lancers of the Guard (in consequence of the deficiency of Staff Officers) were sent to the rear in the direction of Marchienne au Pont, with Orders to hasten the march of the First Corps upon Frasne; while NEY himself was busily occupied in reconnoitring the Enemy's position and movements. Whilst so employed, a despatch reached him from the Emperor, acquainting him that he had just ordered KELLERMANN's Dragoons to march to Gosselies, where they would be at his disposal; stating, at the same time, his intention to withdraw LEFÈBVRE-DESNOUETTE's Light Cavalry of the Guard from the force under his command; and expressing a wish to be informed of the exact disposition of the First and Second Corps, and of the Cavalry Divisions attached to them, as also of the probable strength of the Enemy, and of the particulars which had been obtained concerning him. * * * * *