"In order to collect subscriptions for the benefit of the Central Committee of War Charities, as also for the Society responsible for the dogs for Army Medical Service, Frau Dr. Moekel kindly consented to introduce her dog Rolf to the general public for the first time. "The performance took place in the Hall of the Casino at Mannheim, on the 11th of May, 1914. Every seat in the Hall was taken. "Professor Kraemer of Hohenheim opened the meeting; he dwelt on the usefulness of these dogs--trained to perform tasks in which their intelligence accounted for no small part. He alluded to the scientific importance of the new method of instruction by means of spelling--a method first brought forward in connexion with the 'Thinking Horses' belonging to Messrs. von Osten and K. Krall, and which had revealed hitherto unexpected aspects of the animal soul. "He further pointed out the total absence of any intentional or unintentional signalling, an objection which has already been sufficiently disproved by the many singular and entirely spontaneous communications constantly made on such occasions. Finally, he emphasized that the investigations Frau Dr. Moekel had made with her dog had proved to be of immense value as contributions towards the study of animal psychology, being, in fact, of great scientific service. "Frau Dr. Moekel was then wheeled on to the platform in her bath-chair, and Rolf seated himself by her side. "In the first place a number of sums were set the dog which had been called out by the audience; they were as follows: (4 x 7 - 13) / 3 = 5, 2 x 10 / 4 = 5, 8 x 9 / 12 = 6. "When the problem [3rt]27 was given Rolf proclaimed the correct number '3,'--he immediately followed this, however, by spelling out: 'nid wurdsl' ('no more roots'), implying that he declined anything further to do with that form of reckoning; he had indeed, objected to 'roots' for some time past! He next proceeded to name the various persons he recognized in the assembly--the first being, 'dand, speisl basl' (Frau Dr. Speiser, aus Basel); 'glein' (a Herr Klein, whom he had not seen for two years); further, 'ogl lsr' (Herr Landsgerichtsrat Leser). When, however, he was asked by a gentleman sitting in the front row whether he knew him (the gentleman in question had sent him notes from time to time), he replied: 'lol nid wisn' (Lol doesn't know). (N.B. Rolf is in the habit of referring to himself as 'Lol.')