Creosote from both oil shale and petroleum, and are known as oil-tar creosote when derived from oil tar, and as water-gas-tar creosote when derived from the tar of water gas. Creosote also has been made from pre-coal formations such as lignite, yielding lignite-tar creosote, and peat, yielding peat-tar creosote. The term creosote has a broad range of definitions depending on the origin of the coal tar oil and end use of the material. With respect to wood preservatives, the United States Environmental Protection Agency (EPA) considers the term creosote to mean a pesticide for use as a wood preservative meeting the
Wright's Coal Tar Soap and proprietors of "Wright’s Coal Tar Soap" and other coal tar specialities". It soon became necessary for the company to lease adjoining premises, until in quick succession numbers 44, 46, and 48 were added to the original warehouse at Southwark Street. Wright met an 'untimely death' in Dundee in September 1877: "he caught a cold in the face, which developed into erysipelas, the inflammation extending to the brain, he succumbed with great suddenness at the age of fifty one". Erysipelas is an acute infection of the skin and underlying fat tissues, usually caused by the streptococcus bacteria. Two of his