This monograph represents a "free exchange of ideas" concerning the problems of consciousness at the first conference sponsored by the Josiah Macy, Jr., Foundation, held on March 20 and 21, 1950, in New York. It contains the following chapters:
"The Sleep-Wakefulness Cycle," by Nathaniel Kleitman
"Psychoanalytic Concepts of Sleep and Dreams," by Gregory Zilboorg
"Perception of Pain and Some Factors That Modify It," by Henry K. Beecher
"The Phenomena of Hypnosis," by Margaret Brenman
"Consciousness and the Chemistry of Time," by Hudson Hoagland
To read through these extremely lively and interesting discussions on such a remarkably high level of "consciousness" of the participants is, indeed, a great pleasure. The book is highly recommended.