But what rendered him more efficient than all was his wonderful power of observation and acute description, which made the information he gave so reliable and valuable to the Duke of Wellington. Nothing escaped him. When amidst a group of persons, he would minutely watch the movement, attitude, and expression of every individual that composed it; in the scenery by which he was surrounded he would carefully mark every object: not a tree, not a bush, not a large stone, escaped his observation; and it was said that in a cottage he noted every piece of crockery on the shelf, every domestic utensil, and even the number of knives and forks that were got ready for use at dinner. His acquaintance with the Spanish language was marvellous; from the finest works of Calderon to the ballads in the patois of every province, he could quote, to the infinite delight of those with whom he associated. He could assume any character that he pleased: he could be the Castilian, haughty and reserved; the Asturian, stupid and plodding; the Catalonian, intriguing and cunning; the Andalusian, laughing and merry,--in short, he was all things to all men. Nor was he incapable of passing off, when occasion required, for a Frenchman; but, as he spoke the language with a strong German accent, he called himself an Alsatian. He maintained that character with the utmost nicety; and as there is a strong feeling of friendship, almost equal to that which exists in Scotland, amongst all those who are born in the departments of France bordering on the Rhine, and who maintain their Teutonic originality, he always found friends and supporters in every regiment in the French service. He was on one occasion entrusted with a very difficult mission by the Duke of Wellington, which he undertook effectually to perform, and to return on a particular day with the information that was required. Great was the disappointment when it was ascertained beyond a doubt that, just after leaving the camp, he had been taken prisoner before he had time to exchange his uniform. Such, however, was the case; a troop of dragoons had intercepted him, and carried him off; and the commanding officer desired two soldiers to keep a strict watch over him and carry him to headquarters. He was, of course, disarmed, and, being placed on a horse, was, after a short time, galloped off by his guards. He slept one night under durance vile at a small inn, where he was allowed to remain in the kitchen; conversation flowed on very glibly, and, as he appeared a stupid Englishman, who could not understand a word of French or Spanish, he was allowed to listen, and thus obtained precisely the intelligence that he was in search of. The following morning, being again mounted, he overheard a conversation between his guards, who deliberately agreed to rob him, and to shoot him at a mill where they were to stop, and to report to their officer that they had been compelled to fire at him in consequence of his attempt to escape.