Green Cross (chemical warfare) The mixture was chlorine-phosgene, with 95% and 5%. Green Cross (chemical warfare) Green Cross (Grünkreuz) is a World War I chemical warfare pulmonary agent consisting of chloropicrin (PS, Aquinite, Klop), phosgene (CG, Collongite) and/or trichloromethyl chloroformate (Surpalite, Perstoff). Green Cross is also a generic World War I German marking for artillery shells with pulmonary agents (chemical payload affecting the lungs). The tip of the projectile with the fuse end painted green and a green cross at the bottom of the cartridge. Other Green Cross mixtures were based on phosgene and/or diphosgene. The first use of Green Cross was on May
Westward the Course of Empire Takes Its Way Westward the Course of Empire Takes Its Way Westward the Course of Empire Takes Its Way (also known as Westward Ho) is a painted mural displayed behind the western staircase of the House of Representatives chamber in the United States Capitol Building. The mural was painted by Emanuel Gottlieb Leutze in 1861 and symbolizes Manifest Destiny, the belief that the United States was destined for Western exploration and expansion originating from the initial colonies along the Atlantic seaboard to the Pacific Ocean. A study measuring hangs in the Smithsonian American Art Museum. The darkness turning into light represents the greatness