HAMMANN, OTTO (1852-1928), German journalist and Foreign Office official, was born on Jan. 23, 1852, at Blankenhain. He was Director of the Press Section of the German Foreign Office (1894-1916). Hammann was the trusted adviser of Prince Billow, who always kept an attentive eye upon public opinion as reflected or created in the press. He had personally played a lead ing part in the defensive campaign of the Imperial Chancellor, Count Caprivi, and the Foreign Secretary, Baron Marshall von Bieberstein, in the early '9os, against the Bismarckian fronde. He embodied a considerable portion of the information he had obtained in the three volumes of Erinnerungen which he published after the Revolution : Der neue Kurs (1918) , Zur V orgeschichte des J'Veltkriegs (1918) and Um den Kaiser, Erinnerungen aus den Jahren