Red Cross nurses train to use their gas masks while treating casualties.
Full title reads: "London. The Terrors of a Future War! By order of the War Office ... Red Cross nurses and workers undergo course of training in gas attack and treatment of poisoning."
Men and women in Red Cross uniforms stand in line and put on their gas masks.
As smoke passes over the men and women treat patients on stretchers while wearing their gas masks. (Presumably this is a mock up of a gas attack). The injured people are carried away on their stretchers.
N.B. Story ends abruptly.