into action very rapidly. Markets and Grain Products (1923); J. M. Matthews, Textile Fibres (1925). (A. SA.) ARMOUR, JONATHAN OGDEN (1863- ), American politician, was born at Fars6, North Jutland, Jan. 20 1925, declaring that it may be largely avoided by the Röntgen Society, 1917-8. MacKenzie MBEN SAYS) Aalhoro Vacuum Tubes. Davidson Lecturer and Medallist, Roya! Society of Heating and