There has recently been a renewed interest in both casual use of psychedelics as well as experimental use and attempts to discover therapeutic value. There is an effort to recapture the achievements and failures of past work to guide present use. This book is based around material derived from unpublished scientific research from Dr. Robert Mogar’s laboratory and built upon by forty years of field research by the author. The author Niccolo Caldararo participated in a number of studies of perception, including sensory deprivation and psychotropic drugs, some of recent manufacture or...