GHIGNY's Dutch-Belgian Light Cavalry Brigade, which had, at the commencement of this Cavalry attack, crossed the Charleroi road, came up, in the mean time, to the brow of the main position, on the left of VANDELEUR's Brigade. One of its Regiments, the 4th Light Dragoons, went down the slope, following the 12th Light Dragoons; and after experiencing the effects of a brisk fire which was kept up by DURUTTE's Skirmishers from behind a bank and hedge, low down the slope, and from which the 12th Light Dragoons had previously suffered, it assisted in completing the dispersion of the French Infantry. The other Regiment (the 8th Hussars) remained a few minutes upon the Height, and then advanced to draw off the retiring Cavalry. VIVIAN, who had come forward in person from the extreme Left, and proceeded some way down the slope for the purpose of making his observations, upon perceiving PONSONBY's Brigade charging in disorder up the French Heights, immediately sent back word for the 10th and 18th British Hussars to move through the hollow way to their right, leaving the remaining Regiment of his Brigade, the 1st Hussars of the King's German Legion, to keep a look out to the left. Very shortly afterwards, two guns detached in advance from his Horse Battery, drew up on the brow of the main ridge; but had scarcely opened a fire when a well directed shot from one of the French Batteries passed through the ammunition boxes of one of the limbers, causing an explosion, which drew forth a shout of triumph on the part of the French Artillerymen. The charge of VANDELEUR's Brigade having succeeded, without the active aid of even its own immediate Support, the 11th Light Dragoons; the further advance of the 10th and 18th Hussars was not required, but they continued in their new position, on the right of the lane leading to Verd Cocou, and the two guns rejoined their Battery. Major WHINYATES's Rocket Troop, having been brought up to the crest of the main ridge, from its previous position in reserve near Mont St Jean, its Rocket Sections were moved down to the foot of the exterior slope, whence they discharged several rockets at the French troops then formed, or in the act of reforming, upon the opposite heights. Immediately after the execution of this service, which was gallantly and skilfully conducted, the Troop rejoined its guns on the crest of the position. In the general _mêlée_ which resulted from the charge of the British Heavy Dragoons, and the overthrow of such masses of Infantry, augmented as it was by the subsequent charges of, firstly, the French Lancers, and, then, the two Regiments of British Light Cavalry, severe losses were sustained on both sides; and the British Army was deprived of some of its brightest ornaments.