Methylene Blue, methylthionine chloride or 3,7-bis(dimethylamino)phenothiazin-5-ium chloride is a chemical compound used as a dye and medication for Gram's stain, Wright stain[?], and the treatment of metoxyhemoglobinemia.
... States gains control of the Panama Canal Zone.
March 3 - Kaiser Wilhelm II of Germany becomes the first person to make a political recording of a document, using Thomas ...