Thank you for your thoughtful reply. It sounds like the paperback edition already has a better index than the hardcover (the edition with the missing "ash" entry). The great thing about the web is that it offers the opportunity to enhance books that people already own. Posting your proposed list of substances and processes also has the potential to make a great marketing tool. It would help people find your book in web searches, give fence-sitters the excuse they need to go buy the book, and with page numbers to print editions, add value for folks who already own your book, perhaps providing that extra incentives to spread the word. For a well-curated compendium like yours, an extended outline can serve as the book equivalent of a movie trailer. I see your book as having a longer "shelf life" than the average book, in part because it is so primal (in a "comforts of modern living" sort of way). Retroactively making the book more useful as a reference is one of many ways to make it "the gift that keeps on giving."