Link:
http://books.google.com/books?id=INtzYGQOlFoC&printsec=frontcoverI just noticed that the University of California Press has been generous enough to allow the book
Haoma and Harmaline to be read in its entirety at Google Books. You can't download it as a pdf, but reading it online is at least better than shelling out $800 for a copy... it's over 20 years old, out of print, and almost no one who has a copy wants to get rid of it, so the only other way to read it is at good university libraries, which not everyone has access to.
The reader should be forewarned that the overarching goal of the book is to argue that syrian rue is the true original identity of the ancient Aryan
soma... a thesis which is hardly borne out by their evidence.
Flattery & Schwartz use the Avesta as their primary source for considering the identity of soma/haoma (the two words are etymologically identical, the former coming from the Indian branch and the latter from the Iranian branch of Proto-Indo-Iranian). And from the Avesta, they place a particular emphasis on
Yasna 9, 10, and 11... texts whose origins have been estimated to be some time roughly in the two centuries preceding the birth of Christ (which puts them at least a millennium later than the Vedas).
Further, Flattery weakens their argument by equating ayahuasca brews (complete with DMT-containing admixture plants, tobacco juice, and coca) with the effects of syrian rue alone, and uses features of South American ayahuasca traditions as supposed points of correspondence with the haoma tradition. And as Jonathan Ott has pointed out, the book really ought to have been titled "Haoma and Harmine", since harmine is generally present in substantially greater quantities than harmaline in rue... a fact that you would expect Flattery to have noticed when doing his research for the book.
But in spite of all of its shortcomings and factual errors, the book really is worth a read. If you filter out the central hypothesis, it provides a fresh perspective for considering the question of ancient Aryan
soma (after all, the Vedic portion is really only half of the story). The role of syrian rue in Persian folk religion is also quite intriguing regardless of its potential connection to the
soma complex. And the book does provide information that convincingly argues (at least to my mind) that syrian rue quite probably became employed as a substitute for the original sacrament at some point in time (though perhaps not universally employed as such), and includes a great deal of useful data about the known substitutes (predominantly non-psychoactive) that have been used over the years).
As ever, the fundamental question of the identity of
soma appears to remain insoluble. I'm personally inclined to believe that it was a species of ephedra, though I don't dare to hope there will ever be enough evidence on which to confirm or deny that suspicion.