APPENDIX. Copy of a Letter from Sir A. Wellesley to the Marquis Wellesley. My Lord, Merida, August 24th, 1809. I had the honour of receiving last night, at Medellin, your Ex cellency’s dispatch dated the 22d instant. From all that I have heard of the state of the Government at Seville, I am not surprised that they should have been astonished and alarmed when they heard that 1 had at last determined to adopt the measure which I had so fre quently informed them I should adopt. Although I was desirous to avoid as long as possible to withdraw into Por tugal, and certainly remained in the position upon the Tagus as long as it was practicable, and longer probably than was consistent with the anxiety which I have always felt for the welfare and comfort of the troops placed under my command, I am of opinion that, having been compelled to withdraw, it becomes a question for serious consideration, whether any circumstances should now induce me to remain in Spain, and to hold out hopes of further co-ope ration with the Spanish troops, to be decided on grounds very different from those which were to lead to a decision whether, being joined in co-operation with the Spanish Army, I ought or ought not to separate from them. I beg to lay my ideas upon this point before your Excellency, and to request the aid of your superior judgment, to enable me to decide upon it in the manner which will be most beneficial to the national interests. When the two Armies were joined, this implied engagement existed be tween them, that as long as the operations were conducted by mutual consent they were to continue in co-operation.