When originally published in 1901, the author said: "Hypnotism to the medical profession has not been a specially welcome guest, either in England or America; it has been neglected, misunderstood, and misjudged; indeed the time for fully appreciating the effects of mental states upon physical conditions, and of one mind upon another, has only newly arrived. The relation which hypnotism bears to the subconscious mind and its strange and varied activities is only now beginning to be understood. The same is true of the uses of Hypnotism and Suggestion as educational and reformatory agents, and so of their greatly misjudged ethical relations. It is some of these special relations and utilities of hypnotism, as well as its more common therapeutic uses, that the present volume is intended to illustrate" R. Osgood Mason, M.D., was a Fellow of the New York Academy of Medicine.