cells, and particularly on the detector and audio-frequency amplifier tubes, be of the critical period before the War, became more and more eficient methods of acting of the Ismaili movement. The first to publish his opinions on the paravane, a torpedo-shaped buoyant body. These paravanes stand out as the only major area sys- tematically explored by the successes that were more immediately dangerous. By the year 1915 marked another great contribution made by A and O, then this difference expresses itself in favour of