| Description | Informs General Rykachev, Director of the Central Physics Observatory in St. Petersburg, was appointed Chairman of the Commission for the Magnetic Measurement of a Parallel by the International Association on May 30, 1919. He has requested that the documents relating to this commission be sent to him; of particular importance to him is a copy of the letter from the Berlin Academy to the General Assembly of the International Association in London in 1904, in which the proposal for the magnetic measurement of a parallel is first made. |