I first saw the reference to Meta-Cyanide when I read the Glossary in the back of the first book. (This was, like, 3 days ago. I'm quite new to Dune.*) I'd tried to start the book sever al times, but was bogged down by the labarynthine language and mysterious references... So I read the Appandices and Glossary first. ^^ *Please don't throw stones, I'm only 18. ^^;