H. G. Wells Quote

Spectrum analysis of the black powder points unmistakably to the presence of an unknown element with a brilliant group of three lines in the green, and it is possible that it combines with argon to form a compound which acts at once with deadly effect upon some constituent in the blood.

The War of the Worlds, Book Two, Chapter X (p. 283), Bernhard Tauchnitz. Leipzig, Germany. 1898