Copy letter from Robert William Frederick Harrison, to Professor Paul Harzer, Director, Konigl. Stermwarte, Kiel, Germany 'Dear Sir, I beg to acknowledge the receipt of your letter of Dec. 29th, and to say that I am in communication with the Editor of the Astronomische Nachrichten on the subject. I am, yours faithfully Robt Harrison Asst. Sec. R.S. [Assistant Secretary of the Royal Society]'. [7 January 1899]