The Bureau suffered a sad loss, through the death on April 5, 1947, of its director Prof. Elis Strömgren who had conducted its work with never failing enthusiasm and with great efficiency since 1922. In June 1947 the supervision of the Bureau was entrusted to the writer. The following report may not be altogether complete owing to my absence, for 6 years, in the U.S.A., when I was out of touch with the activities of the Bureau. The last report by Prof. E. Strömgren was dated February 26, 1938; for the rest of the year very few data have been found, hence my report will cover the period January 1, 1939 to December 1, 1947.