Chapter X · -LINES OF FUTURE DEVELOPMENT The Element of Speculation-Chemical Tactics and Strategy-New War Chemicals—"Camouflage" Chemicals-Functions Hitherto Immune-Chemical Constitution and Physiological Action-Unsolved Prob-
Reading edition
Contents PAGE lems of Mustard Gas-A New Type of Obstacle— The "Persistent Lethal" Substance-The Critical Range-The New No-Man's-Land-The "Alert Gas Zone"—Gas and Aircraft-Protective Development -Individual Protection-Collective Protection-Conclusion. 215