Caveman Chemistry

[Cererean]

http://www.cavemanchemistry.com/

I'll have to buy this book. I don't know if it includes Sulphuric Acid, but I learned recently that there *is* a way to produce it using Gypsum and clay - roasted together they give off Sulphur Trioxide, which is dissolved in Sulphuric Acid to produce Oleum, which is then hydrated to produce more Sulphuric Acid.