Where does oil come from? "Rock oil originates as tiny bodies of animals buried in the sediments which, under the influence of increased temperature and pressure acting during an unimaginably long period of time transform into rock oil" -- M.V. Lomonosov 1757AD.
Maybe it's time to change the textbooks...
nothing personal Mr Lomonsov, but I can't help notice you're writing with a quill and probably came to work in a buggy...