In this little book the author has given an account of the history of hypnotism and its applications in medicine and education. The book is based mainly upon the literature of the last century; whilst no exaggerated claims are made for the value of hypnosis in medicine and surgery since psychotherapy has become a recognized branch of medical practice, Mr. Macey might perhaps have considered why it is that hypnotism has not gained in favour.

In his explanation of hypnotism he considers that 'auto-suggestion, in most cases, whether accidental or real, is at the bottom of the effect produced'. The more recent theory based upon psycho-analytic findings is that all auto-suggestion is, at bottom, hetero-suggestion. The author considers that hypnotism is a complete mystery. Research has cleared up a good many of the problems of hypnotisms, but a popular guide is, admittedly, not the place for the consideration of these scientific questions.