First published in 1948, this book gives an outline of the many and often unsuspected ways in which so called 'mental abnormality' could manifest itself, together with an account of developments both in theory and treatment at the time. Today it can be read in its historical context.

Millais Culpin (1874-1952) was an English surgeon, psychologist and entomologist. He graduated as Bachelor of Medicine and Bachelor of Surgery in 1905, becoming a Fellow of the Royal College of Surgeons in 1907. He was one of the first doctors to suggest that 'shell shock' was an emotional disturbance, rather than something caused by a physical trauma, and in 1917 he became a neurological specialist to the Army.