Natural sciences

For the first time in trade paperback, the critically acclaimed counterculture manifesto by the wildly popular McKenna. "Deserves to be a modern classic on mind-altering drugs and hallucinogens".--The Washington Post. Photos and illustrations.

Examinations and accounts of experimentation with subtle energies. In addition to the scientifically accepted forces of electricity, magnetism, and gravity, there are, according to the author, "psychoenergetic" forces, those that interact with the mind as well as the body.

The fifteen plates of the Mutus Liber "the Mute Book," are well known, and this book without words is recognized as a classic of the seventeenth-century alchemical tradition. Although the engravings seem to outline an alchemical process in detail, their message is not immediately obvious and it really requires a commentary to make it intelligible to the present-day reader.