7 8 2 C H R O N O L O G Y 1 9 2 3 March 7 Has audience with King Alfonso XIII and Queen Mother Maria Christina of Austria at the Royal Palace. Delivers third public lecture at the Universidad Central. Attends reception at German ambassador’s residence in his honor. March 8 Receives honorary doctorate from the Universidad Central. Delivers fourth public lecture at the Madrid Athenaeum. March 9 Tour of El Escorial and Mendoza Castle. Attends public tribute in his honor at the Residencia de Estudiantes at the Universidad Central. March 10 Second tour of Prado. March 11 Third tour of Prado. March 12 Travels by train to Zaragoza (Saragossa). Delivers first lecture at the Faculty of Medicine and Sci- ences at the University of Zaragoza. March 13 Tours Zaragoza. Official lunch held in AE’s honor at the Centro Mercantile. Delivers second lecture at the Faculty of Medicine and Sci- ences at the University of Zaragoza. Attends banquet in his honor at German consul’s residence. March 14 Departs Zaragoza for Barcelona. March 15 Travels from Barcelona to Zurich. March 21 Travels from Zurich to Berlin.