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-

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