One of the key enigmas of cultural history has been the identity of a sacred plant called Soma in the ancient Rig Veda of India. Mr. Wasson has aroused considerable attention in learned circles and beyond by advancing and documenting the thesis that Soma was a hallucinogenic mushroom - none other than the Amanita muscaria, the fly-agaric that until recent times was the centre of shamanic rites among the Siberian and Uralic tribesmen. In his presentation...