Gay, well-dressed, debonair as he always is, a veritable master of the art of skilful deception and ingenious subterfuge, he has found it more than once to his advantage to act as spy. His knowledge of the east of Europe is perhaps unique. No man possessed a wider circle of friends than Prince Albert of Hesse-Holstein, who to-day can pose perfectly as the young German Highness, and to-morrow as the wandering Englishman, and a bit of a fool to boot. This wide acquaintance with men and matters in the Balkans first brought him in touch with the Intelligence Department of the Foreign Office, and his services as secret agent of the British Government were promptly secured. In this connection he was always known as Mr Reginald Martin. Downing Street is rather near New Scotland Yard, where the names of Prince Albert of Hesse-Holstein and of Tremlett are a little too well-known. Therefore, to the chief of the Secret Service, and afterwards to the British Ministers and consuls resident in the Balkan countries, Servia, Bulgaria, Montenegro, and Roumania, he was for a time known as Reggie Martin. Only on rare occasions, however, were his services requisitioned. The game of spying did not pay him nearly so well as the game of jewel-lifting. Yet he had taken to it out of mere love of adventure, and surely some of his experiences in the Orient were sufficiently perilous and exciting. More than once he had been in possession of State secrets which, if divulged, would have set two or more of the Powers flying at one another's throats, and more than once he had carried his life in his hand. One series of incidents through which he lived last year were, in themselves, as romantic as anything seen written in fiction. They were hard solid facts--an exciting chapter from the life of a man who was a perfect and polished adventurer, a little too impressionable perhaps, where the fair sex were concerned, but keen-witted, audacious, and utterly fearless. He seldom, if ever, speaks of the affair himself, for he is not anxious that people should know of his connection with the Secret Service. As an old college chum, and as one whom he knows is not likely to "give him away" to the police, he one day, after great persuasion, related it in confidence to me as together we spent a wearisome day in the _rapide_ between Paris and Marseilles. "Well, my dear Diprose, it happened like this," he said, as he selected one of his "Petroffs" and lit it with great care. "I was sent to the Balkans on a very difficult mission. At Downing Street they did not conceal that fact from me. But I promised to do my best. Garrett was with the `sixty' in Vienna, so I wired sending it on to Sofia, in Bulgaria, and then left Charing Cross for the Balkans myself.