CHAPTER XXXIII.
BITUMINOUS SUBSTANCES.
Formation of Petroleum—Enormous Production of the Pennsylvanian Wells—Asphalte used by the Ancients— Asphalte Pavements—The Pitch Lake of Trinidad—Jet—Its Manufacture in Whitby 426
BITUMINOUS SUBSTANCES.
Formation of Petroleum—Enormous Production of the Pennsylvanian Wells—Asphalte used by the Ancients— Asphalte Pavements—The Pitch Lake of Trinidad—Jet—Its Manufacture in Whitby 426