Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Professor [William] Burnside, FRS Informs Professor [William] Burnside that Mr. Abell's paper was passed for publication in the 'Proceedings' at the last meeting of the Committee of Papers. Explains that there was a short delay owing to the nature of the paper, which the authorities considered might convey information of use to the enemy. 3 January 1919