Here was the clue that Denmark was trading extensively with the Central Powers. This spy was listing the cars and steamships engaged in this trade; he was taking the names of the ships and cars and making a record of the commodities in which trading was done. After observing his work for some time, I made my presence known and found him to be the street vendor from whom I had purchased a lead pencil on my first evening in the city, but he was now posing as a railroad official and held his cane before him as he walked rapidly away. It did not require much time for the street vendor, who pretended to be lame as he leaned upon his cane, to dent the crown of his hat and assume the more important attitude of a railway and steamboat inspector. He may have deceived others a long time, but I was on his trail and discovered his smart delusion much sooner than he expected. Several times I invited a number of the spies that I met at the Bristol Hotel to accompany me to entertainments, including a certain John Denton, a friend of Mr. Fenwick, who went with me to the Scala Theater, where a comic opera known as _Polsk Blod_ was presented. This gentleman entertained much and came in contact with many prominent Danes. I gave him the letter written by Mr. Fenwick at New York, but not before I made a copy of it, thinking this precaution would serve my purpose to an advantage elsewhere. Later, when I returned to New York, I secured stationery and had duplicate copies written on letterheads of Hotel Belmont. IX--THROUGH CORDONS OF SPIES TO BERLIN After some time of interesting visits and conversations, I left Copenhagen to go partly by train and partly by steamer to Berlin, making the trip to Germany by way of Warnemünde. This is the port on the Baltic Sea through which the German capital and the interior of Europe may be reached most conveniently. I had not been in Germany many days until I learned from personal observation that some travelers I met professed friendship for Germany and in spite of their professions were false and dangerous enemies. To me it seemed, in view of this fact, that the authorities leaned rather on the side of leniency than on the side of severity. In all public places was the notice: SOLDATEN VORSICHT IN GESPRACHEN SPIONENGEFAHR The translation is as follows: Soldiers, careful in conversations; danger of spies! That there was an invasion of spies and secret service men, mostly representing England and France, I learned soon after I reached the large cities of Germany. They were disguised in various ways, as laborers, students and professional and business men.