That this “Disposition” was relied on by Wellington when he wrote his letter to Blücher, seems, by comparing the two papers, very clear. We find, for example, that the “Disposition” states that, of the four divisions of the 1st Corps, Cooke’s was at 7 A.M. at Braine-le-Comte, marching to Nivelles and Quatre Bras, Alten’s was at Nivelles, and marching to Quatre Bras, and those of Chassé and Perponcher were at Nivelles and Quatre Bras. We then find the Duke writing to Blücher, that, at 10.30 A.M., one division of this corps was at Quatre Bras and the rest at Nivelles. It cannot be denied that, so far as this corps is concerned, certainly, the two papers hang together perfectly well. Wellington had a perfect right to suppose that Cooke could get from Braine-le-Comte to Nivelles, or nearly there, between seven and half-past ten; and as for the positions of the other divisions, he simply follows the memorandum which his chief-of-staff has prepared for his information, and on which he had an undoubted right to rely. We shall give, later on, other instances of this agreement between these two papers. They seem to us to demonstrate the authenticity of the “Disposition.” Assuming now the authenticity of this memorandum, we wish to point out that its statements necessarily imply that orders had been issued to the army other than those of which we have copies,—that is, other than those of which we have given abstracts above. Thus, all we have hitherto been able to ascertain in regard to the orders to Cooke’s division is, that it was by the 10 P.M. order of June 15, directed to march from Enghien on Braine-le-Comte. It would appear from the De Lancey Memorandum that it had been subsequently ordered to Nivelles and Quatre Bras. And the Duke does not hesitate to tell Marshal Blücher—on the strength of De Lancey’s statement, that, at 7 A.M., Cooke was at Braine-le-Comte,—that Cooke must have arrived at Nivelles by half-past ten,—he being, according to De Lancey’s memorandum, under orders to proceed there. So with the cavalry. We have seen above that in an early morning order of the 16th, it is said that the cavalry had been directed on Braine-le-Comte. Yet there must have been some subsequently issued order to Lord Uxbridge, for we find the “Disposition” stating that the cavalry is, at 7 A.M., at Braine-le-Comte, and is marching to Nivelles and Quatre Bras; and Wellington, relying on this statement of his chief-of-staff, that a subsequent order had been sent out ordering the cavalry to continue their march to Nivelles, does not hesitate to tell Marshal Blücher, that his cavalry will be at Nivelles at noon. We shall have occasion hereafter to examine both papers in detail; but what we have just pointed out will suffice for the purpose now in hand.