The German Army first used chlorine gas cylinders in April 1915 against the French Army at Ypres. French soldiers reported seeing yellow-green clouds drifting slowly towards the Allied trenches. They also noticed its distinctive smell which was like a mixture of pineapple and pepper.
Arthur 'Boo' Radley is the town recluse in To Kill a Mockingbird; Boo's character is multidimensional and revealed throughout the novel ; Boo Radley and his life is the subject of many rumors and the Finch children's games ; Boo Radley forms a bond with the children and saves their lives
He is the main antagonist in the second part of the book. Bob Ewell was killed in the climax of the novel. Atticus thinks it is his own son Jem that did it while the sheriff, Heck Tate, decides it is Boo Radley. It is up to the reader to decide which is the true story.