Heaven and Hell: Appendix 1 Summary and Analysis

Huxley discusses two other ways to achieve visionary experiences. These include carbon dioxide and a stroboscopic lamp. He is quick to mention that neither of these is as effective as the other methods he has discussed. Inhalation of carbon dioxide has been shown to help people to see images that can be considered part of a visionary experience. There is a lack of consistency across individuals on what they see when they are under the influence of carbon dioxide which makes it a somewhat less understood technique than mescalin. The power of carbon dioxide is similar to the experiences of breathing exercises, yoga, or shouting. The amount of carbon dioxide that is permitted to reach the brain during these activities affects the ability of the person to have visionary experiences. Shouting and singing, Huxley claims...